WIP: all tests pass

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [0.3 UNRELEASED]
+### Added
+* Simple debugging capabilities, with a custom `pdb.Debugger` subclass that exposes commands to list agents and their status and set breakpoints on states (for FSM agents)
 ### Changed
 * Configuration schema is very different now. Check `soil.config` for more information. We are also using Pydantic for (de)serialization.
 * There may be more than one topology/network in the simulation

docs/soil-vs.rst

@@ -0,0 +1,12 @@
+### MESA
+
+Starting with version 0.3, Soil has been redesigned to complement Mesa, while remaining compatible with it.
+That means that every component in Soil (i.e., Models, Environments, etc.) can be mixed with existing mesa components.
+In fact, there are examples that show how that integration may be used, in the `examples/mesa` folder in the repository.
+
+Here are some reasons to use Soil instead of plain mesa:
+
+- Less boilerplate for common scenarios (by some definitions of common)
+- Functions to automatically populate a topology with an agent distribution (i.e., different ratios of agent class and state)
+- The `soil.Simulation` class allows you to run multiple instances of the same experiment (i.e., multiple trials with the same parameters but a different randomness seed)
+- Reporting functions that aggregate multiple

examples/complete.yml

@@ -1,14 +1,16 @@
 ---
 version: '2'
-general:
+name: simple
-  id: simple
+group: tests
-  group: tests
+dir_path: "/tmp/"
-  dir_path: "/tmp/"
+num_trials: 3
-  num_trials: 3
+max_steps: 100
-  max_time: 100
+interval: 1
-  interval: 1
+seed: "CompleteSeed!"
-  seed: "CompleteSeed!"
+model_class: Environment
-topologies:
+model_params:
+  am_i_complete: true
+  topologies:
     default:
       params:
         generator: complete_graph
@@ -17,30 +19,36 @@ topologies:
       params:
         generator: complete_graph
         n: 2
-environment:
+  environment:
-  environment_class: Environment
+  agents:
-  params:
-    am_i_complete: true
-agents:
-# Agents are split several groups, each with its own definition
-  default: # This is a special group. Its values will be used as default values for the rest of the groups
     agent_class: CounterModel
     topology: default
     state:
       times: 1
-  environment:
       # In this group we are not specifying any topology
-    topology: False
     fixed:
       - name: 'Environment Agent 1'
-        agent_class: CounterModel
+        agent_class: BaseAgent
+        group: environment
+        topology: null
+        hidden: true
         state:
           times: 10
-  general_counters:
+      - agent_class: CounterModel
-    topology: default
+        id: 0
+        group: other_counters
+        topology: another_graph
+        state:
+          times: 1
+          total: 0
+      - agent_class: CounterModel
+        topology: another_graph
+        group: other_counters
+        id: 1
     distribution:
       - agent_class: CounterModel
         weight: 1
+        group: general_counters
         state:
           times: 3
       - agent_class: AggregatedCounter
@@ -51,16 +59,3 @@ agents:
         n: 2
         state:
           times: 5
-
-  other_counters:
-    topology: another_graph
-    fixed:
-      - agent_class: CounterModel
-        id: 0
-        state:
-          times: 1
-          total: 0
-      - agent_class: CounterModel
-        id: 1
-        # If not specified, it will use the state set in the default
-        # state:

examples/complete_opt2.yml

@@ -0,0 +1,63 @@
+---
+version: '2'
+id: simple
+group: tests
+dir_path: "/tmp/"
+num_trials: 3
+max_steps: 100
+interval: 1
+seed: "CompleteSeed!"
+model_class: "soil.Environment"
+model_params:
+  topologies:
+    default:
+      params:
+        generator: complete_graph
+        n: 10
+    another_graph:
+      params:
+        generator: complete_graph
+        n: 2
+  agents:
+    # The values here will be used as default values for any agent
+    agent_class: CounterModel
+    topology: default
+    state:
+      times: 1
+    # This specifies a distribution of agents, each with a `weight` or an explicit number of agents
+    distribution:
+      - agent_class: CounterModel
+        weight: 1
+        # This is inherited from the default settings
+        #topology: default
+        state:
+          times: 3
+      - agent_class: AggregatedCounter
+        topology: default
+        weight: 0.2
+    fixed:
+      - name: 'Environment Agent 1'
+        # All the other agents will assigned to the 'default' group
+        group: environment
+        # Do not count this agent towards total limits
+        hidden: true
+        agent_class: soil.BaseAgent
+        topology: null
+        state:
+          times: 10
+      - agent_class: CounterModel
+        topology: another_graph
+        id: 0
+        state:
+          times: 1
+          total: 0
+      - agent_class: CounterModel
+        topology: another_graph
+        id: 1
+    override:
+      # 2 agents that match this filter will be updated to match the state {times: 5}
+      - filter:
+          agent_class: AggregatedCounter
+        n: 2
+        state:
+            times: 5

examples/custom_generator/custom_generator.yml

@@ -2,7 +2,7 @@
 name: custom-generator
 description: Using a custom generator for the network
 num_trials: 3
-max_time: 100
+max_steps: 100
 interval: 1
 network_params:
   generator: mymodule.mygenerator

examples/custom_generator/mymodule.py

@@ -1,4 +1,5 @@
 from networkx import Graph
+import random
 import networkx as nx
 
 def mygenerator(n=5, n_edges=5):
@@ -13,9 +14,9 @@ def mygenerator(n=5, n_edges=5):
     
     for i in range(n_edges):
         nodes = list(G.nodes)
-        n_in = self.random.choice(nodes)
+        n_in = random.choice(nodes)
         nodes.remove(n_in)  # Avoid loops
-        n_out = self.random.choice(nodes)
+        n_out = random.choice(nodes)
         G.add_edge(n_in, n_out)
     return G
     

examples/mesa/mesa.yml

@@ -3,17 +3,21 @@ name: mesa_sim
 group: tests
 dir_path: "/tmp"
 num_trials: 3
-max_time: 100
+max_steps: 100
 interval: 1
 seed: '1'
-network_params:
+model_class: social_wealth.MoneyEnv
+model_params:
+  topologies:
+    default: 
+      params:
         generator: social_wealth.graph_generator
         n: 5
-network_agents:
+  agents:
+    distribution:
       - agent_class: social_wealth.SocialMoneyAgent
+        topology: default
         weight: 1
-environment_class: social_wealth.MoneyEnv
-environment_params:
   mesa_agent_class: social_wealth.MoneyAgent
   N: 10
   width: 50

examples/newsspread/NewsSpread.yml

@@ -5,7 +5,7 @@ environment_params:
   prob_neighbor_spread: 0.0
   prob_tv_spread: 0.01
 interval: 1
-max_time: 300
+max_steps: 300
 name: Sim_all_dumb
 network_agents:
 - agent_class: newsspread.DumbViewer
@@ -28,7 +28,7 @@ environment_params:
   prob_neighbor_spread: 0.0
   prob_tv_spread: 0.01
 interval: 1
-max_time: 300
+max_steps: 300
 name: Sim_half_herd
 network_agents:
 - agent_class: newsspread.DumbViewer
@@ -59,7 +59,7 @@ environment_params:
   prob_neighbor_spread: 0.0
   prob_tv_spread: 0.01
 interval: 1
-max_time: 300
+max_steps: 300
 name: Sim_all_herd
 network_agents:
 - agent_class: newsspread.HerdViewer
@@ -85,7 +85,7 @@ environment_params:
   prob_tv_spread: 0.01
   prob_neighbor_cure: 0.1
 interval: 1
-max_time: 300
+max_steps: 300
 name: Sim_wise_herd
 network_agents:
 - agent_class: newsspread.HerdViewer
@@ -110,7 +110,7 @@ environment_params:
   prob_tv_spread: 0.01
   prob_neighbor_cure: 0.1
 interval: 1
-max_time: 300
+max_steps: 300
 name: Sim_all_wise
 network_agents:
 - agent_class: newsspread.WiseViewer

examples/newsspread/newsspread.py

@@ -16,13 +16,13 @@ class DumbViewer(FSM, NetworkAgent):
     @state
     def neutral(self):
         if self['has_tv']:
-            if prob(self.env['prob_tv_spread']):
+            if self.prob(self.model['prob_tv_spread']):
                 return self.infected
 
     @state
     def infected(self):
         for neighbor in self.get_neighboring_agents(state_id=self.neutral.id):
-            if prob(self.env['prob_neighbor_spread']):
+            if self.prob(self.model['prob_neighbor_spread']):
                 neighbor.infect()
 
     def infect(self):
@@ -44,9 +44,9 @@ class HerdViewer(DumbViewer):
         '''Notice again that this is NOT a state. See DumbViewer.infect for reference'''
         infected = self.count_neighboring_agents(state_id=self.infected.id)
         total = self.count_neighboring_agents()
-        prob_infect = self.env['prob_neighbor_spread'] * infected/total
+        prob_infect = self.model['prob_neighbor_spread'] * infected/total
         self.debug('prob_infect', prob_infect)
-        if prob(prob_infect):
+        if self.prob(prob_infect):
             self.set_state(self.infected)
 
 
@@ -63,9 +63,9 @@ class WiseViewer(HerdViewer):
 
     @state
     def cured(self):
-        prob_cure = self.env['prob_neighbor_cure']
+        prob_cure = self.model['prob_neighbor_cure']
         for neighbor in self.get_neighboring_agents(state_id=self.infected.id):
-            if prob(prob_cure):
+            if self.prob(prob_cure):
                 try:
                     neighbor.cure()
                 except AttributeError:
@@ -80,7 +80,7 @@ class WiseViewer(HerdViewer):
                     1.0)
         infected = max(self.count_neighboring_agents(self.infected.id),
                        1.0)
-        prob_cure = self.env['prob_neighbor_cure'] * (cured/infected)
+        prob_cure = self.model['prob_neighbor_cure'] * (cured/infected)
-        if prob(prob_cure):
+        if self.prob(prob_cure):
             return self.cured
         return self.set_state(super().infected)

examples/pubcrawl/pubcrawl.py

@@ -60,12 +60,10 @@ class Patron(FSM, NetworkAgent):
     '''
     level = logging.DEBUG
 
-    defaults = {
+    pub = None
-        'pub': None,
+    drunk = False
-        'drunk': False,
+    pints = 0
-        'pints': 0,
+    max_pints = 3
-        'max_pints': 3,
-    }
 
     @default_state
     @state
@@ -89,9 +87,9 @@ class Patron(FSM, NetworkAgent):
             return self.sober_in_pub
         self.debug('I am looking for a pub')
         group = list(self.get_neighboring_agents())
-        for pub in self.env.available_pubs():
+        for pub in self.model.available_pubs():
             self.debug('We\'re trying to get into {}: total: {}'.format(pub, len(group)))
-            if self.env.enter(pub, self, *group):
+            if self.model.enter(pub, self, *group):
                 self.info('We\'re all {} getting in {}!'.format(len(group), pub))
                 return self.sober_in_pub
 
@@ -128,7 +126,7 @@ class Patron(FSM, NetworkAgent):
         success depend on both agents' openness.
         '''
         if force or self['openness'] > self.random.random():
-            self.env.add_edge(self, other_agent)
+            self.model.add_edge(self, other_agent)
             self.info('Made some friend {}'.format(other_agent))
             return True
         return False
@@ -150,7 +148,7 @@ class Patron(FSM, NetworkAgent):
         return befriended
 
 
-class Police(FSM, NetworkAgent):
+class Police(FSM):
     '''Simple agent to take drunk people out of pubs.'''
     level = logging.INFO
 

examples/pubcrawl/pubcrawl.yml

@@ -1,7 +1,7 @@
 ---
 name: pubcrawl
 num_trials: 3
-max_time: 10
+max_steps: 10
 dump: false
 network_params:
   # Generate 100 empty nodes. They will be assigned a network agent

examples/rabbits/README.md

@@ -0,0 +1,4 @@
+There are two similar implementations of this simulation.
+
+- `basic`. Using simple primites
+- `improved`. Using more advanced features such as the `time` module to avoid unnecessary computations (i.e., skip steps), and generator functions.

examples/rabbits/basic/rabbit_agents.py

@@ -0,0 +1,130 @@
+from soil.agents import FSM, state, default_state, BaseAgent, NetworkAgent
+from soil.time import Delta
+from enum import Enum
+from collections import Counter
+import logging
+import math
+
+
+class RabbitModel(FSM, NetworkAgent):
+
+    sexual_maturity = 30
+    life_expectancy = 300
+
+    @default_state
+    @state
+    def newborn(self):
+        self.info('I am a newborn.')
+        self.age = 0
+        self.offspring = 0
+        return self.youngling
+
+    @state
+    def youngling(self):
+        self.age += 1
+        if self.age >= self.sexual_maturity:
+            self.info(f'I am fertile! My age is {self.age}')
+            return self.fertile
+
+    @state
+    def fertile(self):
+        raise Exception("Each subclass should define its fertile state")
+
+    @state
+    def dead(self):
+        self.die()
+
+
+class Male(RabbitModel):
+    max_females = 5
+    mating_prob = 0.001
+
+    @state
+    def fertile(self):
+        self.age += 1
+
+        if self.age > self.life_expectancy:
+            return self.dead
+
+        # Males try to mate
+        for f in self.model.agents(agent_class=Female,
+                                   state_id=Female.fertile.id,
+                                   limit=self.max_females):
+            self.debug('FOUND A FEMALE: ', repr(f), self.mating_prob)
+            if self.prob(self['mating_prob']):
+                f.impregnate(self)
+                break  # Take a break
+
+
+class Female(RabbitModel):
+    gestation = 100
+
+    @state
+    def fertile(self):
+        # Just wait for a Male
+        self.age += 1
+        if self.age > self.life_expectancy:
+            return self.dead
+
+    def impregnate(self, male):
+        self.info(f'{repr(male)} impregnating female {repr(self)}')
+        self.mate = male
+        self.pregnancy = -1
+        self.set_state(self.pregnant, when=self.now)
+        self.number_of_babies = int(8+4*self.random.random())
+        self.debug('I am pregnant')
+
+    @state
+    def pregnant(self):
+        self.age += 1
+        self.pregnancy += 1
+
+        if self.prob(self.age / self.life_expectancy):
+            return self.die()
+
+        if self.pregnancy >= self.gestation:
+            self.info('Having {} babies'.format(self.number_of_babies))
+            for i in range(self.number_of_babies):
+                state = {}
+                agent_class = self.random.choice([Male, Female])
+                child = self.model.add_node(agent_class=agent_class,
+                                            topology=self.topology,
+                                            **state)
+                child.add_edge(self)
+                try:
+                    child.add_edge(self.mate)
+                    self.model.agents[self.mate].offspring += 1
+                except ValueError:
+                    self.debug('The father has passed away')
+
+                self.offspring += 1
+            self.mate = None
+            return self.fertile
+
+    @state
+    def dead(self):
+        super().dead()
+        if 'pregnancy' in self and self['pregnancy'] > -1:
+            self.info('A mother has died carrying a baby!!')
+
+
+class RandomAccident(BaseAgent):
+
+    level = logging.INFO
+
+    def step(self):
+        rabbits_alive = self.model.topology.number_of_nodes()
+
+        if not rabbits_alive:
+            return self.die()
+
+        prob_death = self.model.get('prob_death', 1e-100)*math.floor(math.log10(max(1, rabbits_alive)))
+        self.debug('Killing some rabbits with prob={}!'.format(prob_death))
+        for i in self.iter_agents(agent_class=RabbitModel):
+            if i.state.id == i.dead.id:
+                continue
+            if self.prob(prob_death):
+                self.info('I killed a rabbit: {}'.format(i.id))
+                rabbits_alive -= 1
+                i.set_state(i.dead)
+        self.debug('Rabbits alive: {}'.format(rabbits_alive))

examples/rabbits/basic/rabbits.yml

@@ -0,0 +1,41 @@
+---
+version: '2'
+name: rabbits_basic
+num_trials: 1
+seed: MySeed
+description: null
+group: null
+interval: 1.0
+max_time: 100
+model_class: soil.environment.Environment
+model_params:
+  agents:
+    topology: default
+    agent_class: rabbit_agents.RabbitModel
+    distribution:
+    - agent_class: rabbit_agents.Male
+      topology: default
+      weight: 1
+    - agent_class: rabbit_agents.Female
+      topology: default
+      weight: 1
+    fixed:
+    - agent_class: rabbit_agents.RandomAccident
+      topology: null
+      hidden: true
+      state:
+        group: environment
+    state:
+      group: network
+      mating_prob: 0.1
+  prob_death: 0.001
+  topologies:
+    default:
+      topology:
+        directed: true
+        links: []
+        nodes:
+        - id: 1
+        - id: 0
+extra:
+  visualization_params: {}

examples/rabbits/improved/rabbit_agents.py

@@ -0,0 +1,130 @@
+from soil.agents import FSM, state, default_state, BaseAgent, NetworkAgent
+from soil.time import Delta, When, NEVER
+from enum import Enum
+import logging
+import math
+
+
+class RabbitModel(FSM, NetworkAgent):
+
+    mating_prob = 0.005
+    offspring = 0
+    birth = None
+
+    sexual_maturity = 3
+    life_expectancy = 30
+
+    @default_state
+    @state
+    def newborn(self):
+        self.birth = self.now
+        self.info(f'I am a newborn.')
+        self.model['rabbits_alive'] = self.model.get('rabbits_alive', 0) + 1
+
+        # Here we can skip the `youngling` state by using a coroutine/generator. 
+        while self.age < self.sexual_maturity:
+            interval = self.sexual_maturity - self.age
+            yield Delta(interval)
+
+        self.info(f'I am fertile! My age is {self.age}')
+        return self.fertile
+
+    @property
+    def age(self):
+        return self.now - self.birth
+
+    @state
+    def fertile(self):
+        raise Exception("Each subclass should define its fertile state")
+
+    def step(self):
+        super().step()
+        if self.prob(self.age / self.life_expectancy):
+            return self.die()
+
+
+class Male(RabbitModel):
+
+    max_females = 5
+
+    @state
+    def fertile(self):
+        # Males try to mate
+        for f in self.model.agents(agent_class=Female,
+                                   state_id=Female.fertile.id,
+                                   limit=self.max_females):
+            self.debug('Found a female:', repr(f))
+            if self.prob(self['mating_prob']):
+                f.impregnate(self)
+                break  # Take a break, don't try to impregnate the rest
+
+            
+class Female(RabbitModel):
+    due_date = None
+    age_of_pregnancy = None
+    gestation = 10
+    mate = None
+
+    @state
+    def fertile(self):
+        return self.fertile, NEVER
+
+    @state
+    def pregnant(self):
+        self.info('I am pregnant')
+        if self.age > self.life_expectancy:
+            return self.dead
+
+        self.due_date = self.now + self.gestation
+
+        number_of_babies = int(8+4*self.random.random())
+
+        while self.now < self.due_date:
+            yield When(self.due_date)
+
+        self.info('Having {} babies'.format(number_of_babies))
+        for i in range(number_of_babies):
+            agent_class = self.random.choice([Male, Female])
+            child = self.model.add_node(agent_class=agent_class,
+                                        topology=self.topology)
+            self.model.add_edge(self, child)
+            self.model.add_edge(self.mate, child)
+            self.offspring += 1
+            self.model.agents[self.mate].offspring += 1
+        self.mate = None
+        self.due_date = None
+        return self.fertile
+
+    @state
+    def dead(self):
+        super().dead()
+        if self.due_date is not None:
+            self.info('A mother has died carrying a baby!!')
+
+    def impregnate(self, male):
+        self.info(f'{repr(male)} impregnating female {repr(self)}')
+        self.mate = male
+        self.set_state(self.pregnant, when=self.now)
+
+
+class RandomAccident(BaseAgent):
+
+    level = logging.INFO
+
+    def step(self):
+        rabbits_total = self.model.topology.number_of_nodes()
+        if 'rabbits_alive' not in self.model:
+            self.model['rabbits_alive'] = 0
+        rabbits_alive = self.model.get('rabbits_alive', rabbits_total)
+        prob_death = self.model.get('prob_death', 1e-100)*math.floor(math.log10(max(1, rabbits_alive)))
+        self.debug('Killing some rabbits with prob={}!'.format(prob_death))
+        for i in self.model.network_agents:
+            if i.state.id == i.dead.id:
+                continue
+            if self.prob(prob_death):
+                self.info('I killed a rabbit: {}'.format(i.id))
+                rabbits_alive = self.model['rabbits_alive'] = rabbits_alive -1
+                i.set_state(i.dead)
+        self.debug('Rabbits alive: {}/{}'.format(rabbits_alive, rabbits_total))
+        if self.model.count_agents(state_id=RabbitModel.dead.id) == self.model.topology.number_of_nodes():
+            self.die()

examples/rabbits/improved/rabbits.yml

@@ -0,0 +1,41 @@
+---
+version: '2'
+name: rabbits_improved
+num_trials: 1
+seed: MySeed
+description: null
+group: null
+interval: 1.0
+max_time: 100
+model_class: soil.environment.Environment
+model_params:
+  agents:
+    topology: default
+    agent_class: rabbit_agents.RabbitModel
+    distribution:
+    - agent_class: rabbit_agents.Male
+      topology: default
+      weight: 1
+    - agent_class: rabbit_agents.Female
+      topology: default
+      weight: 1
+    fixed:
+    - agent_class: rabbit_agents.RandomAccident
+      topology: null
+      hidden: true
+      state:
+        group: environment
+    state:
+      group: network
+      mating_prob: 0.1
+  prob_death: 0.001
+  topologies:
+    default:
+      topology:
+        directed: true
+        links: []
+        nodes:
+        - id: 1
+        - id: 0
+extra:
+  visualization_params: {}

examples/rabbits/rabbit_agents.py

@@ -1,133 +0,0 @@
-from soil.agents import FSM, state, default_state, BaseAgent, NetworkAgent
-from enum import Enum
-import logging
-import math
-
-
-class Genders(Enum):
-    male = 'male'
-    female = 'female'
-
-
-class RabbitModel(FSM, NetworkAgent):
-
-    defaults = {
-        'age': 0,
-        'gender': Genders.male.value,
-        'mating_prob': 0.001,
-        'offspring': 0,
-    }
-
-    sexual_maturity = 3 #4*30
-    life_expectancy = 365 * 3
-    gestation = 33
-    pregnancy = -1
-    max_females = 5
-
-    @default_state
-    @state
-    def newborn(self):
-        self.debug(f'I am a newborn at age {self["age"]}')
-        self['age'] += 1
-
-        if self['age'] >= self.sexual_maturity:
-            self.debug('I am fertile!')
-            return self.fertile
-    @state
-    def fertile(self):
-        raise Exception("Each subclass should define its fertile state")
-
-    @state
-    def dead(self):
-        self.info('Agent {} is dying'.format(self.id))
-        self.die()
-
-
-class Male(RabbitModel):
-
-    @state
-    def fertile(self):
-        self['age'] += 1
-        if self['age'] > self.life_expectancy:
-            return self.dead
-
-        if self['gender'] == Genders.female.value:
-            return
-
-        # Males try to mate
-        for f in self.get_agents(state_id=Female.fertile.id,
-                                 agent_class=Female,
-                                 limit_neighbors=False,
-                                 limit=self.max_females):
-            r = self.random.random()
-            if r < self['mating_prob']:
-                self.impregnate(f)
-                break # Take a break
-    def impregnate(self, whom):
-        whom['pregnancy'] = 0
-        whom['mate'] = self.id
-        whom.set_state(whom.pregnant)
-        self.debug('{} impregnating: {}. {}'.format(self.id, whom.id, whom.state))
-
-class Female(RabbitModel):
-    @state
-    def fertile(self):
-        # Just wait for a Male
-        pass
-
-    @state
-    def pregnant(self):
-        self['age'] += 1
-        if self['age'] > self.life_expectancy:
-            return self.dead
-
-        self['pregnancy'] += 1
-        self.debug('Pregnancy: {}'.format(self['pregnancy']))
-        if self['pregnancy'] >= self.gestation:
-            number_of_babies = int(8+4*self.random.random())
-            self.info('Having {} babies'.format(number_of_babies))
-            for i in range(number_of_babies):
-                state = {}
-                state['gender'] = self.random.choice(list(Genders)).value
-                child = self.env.add_node(self.__class__, state)
-                self.env.add_edge(self.id, child.id)
-                self.env.add_edge(self['mate'], child.id)
-                # self.add_edge()
-                self.debug('A BABY IS COMING TO LIFE')
-                self.env['rabbits_alive'] = self.env.get('rabbits_alive', self.topology.number_of_nodes())+1
-                self.debug('Rabbits alive: {}'.format(self.env['rabbits_alive']))
-                self['offspring'] += 1
-                self.env.get_agent(self['mate'])['offspring'] += 1
-            del self['mate']
-            self['pregnancy'] = -1
-            return self.fertile
-
-    @state
-    def dead(self):
-        super().dead()
-        if 'pregnancy' in self and self['pregnancy'] > -1:
-            self.info('A mother has died carrying a baby!!')
-
-
-class RandomAccident(BaseAgent):
-
-    level = logging.DEBUG
-
-    def step(self):
-        rabbits_total = self.env.topology.number_of_nodes()
-        if 'rabbits_alive' not in self.env:
-            self.env['rabbits_alive'] = 0
-        rabbits_alive = self.env.get('rabbits_alive', rabbits_total)
-        prob_death = self.env.get('prob_death', 1e-100)*math.floor(math.log10(max(1, rabbits_alive)))
-        self.debug('Killing some rabbits with prob={}!'.format(prob_death))
-        for i in self.env.network_agents:
-            if i.state['id'] == i.dead.id:
-                continue
-            if self.prob(prob_death):
-                self.debug('I killed a rabbit: {}'.format(i.id))
-                rabbits_alive = self.env['rabbits_alive'] = rabbits_alive -1
-                self.log('Rabbits alive: {}'.format(self.env['rabbits_alive']))
-                i.set_state(i.dead)
-        self.log('Rabbits alive: {}/{}'.format(rabbits_alive, rabbits_total))
-        if self.env.count_agents(state_id=RabbitModel.dead.id) == self.env.topology.number_of_nodes():
-            self.die()

examples/rabbits/rabbits.yml

@@ -1,20 +0,0 @@
----
-name: rabbits_example
-max_time: 100
-interval: 1
-seed: MySeed
-agent_class: rabbit_agents.RabbitModel
-environment_agents:
-    - agent_class: rabbit_agents.RandomAccident
-environment_params:
-  prob_death: 0.001
-default_state:
-  mating_prob: 0.1
-topology:
-  nodes:
-    - id: 1
-      agent_class: rabbit_agents.Male
-    - id: 0
-      agent_class: rabbit_agents.Female
-  directed: true
-  links: []

examples/template.yml

@@ -6,9 +6,10 @@ template:
   group: simple
   num_trials: 1
   interval: 1
-  max_time: 2
+  max_steps: 2
   seed: "CompleteSeed!"
   dump: false
+  model_params:
     network_params:
       generator: complete_graph
       n: 10
@@ -19,7 +20,6 @@ template:
           state_id: 0
       - agent_class: AggregatedCounter
         weight: "{{ 1 - x1 }}"
-  environment_params:
     name: "{{ x3 }}"
   skip_test: true
 vars:

examples/terrorism/TerroristNetworkModel.py

@@ -81,6 +81,26 @@ class TerroristSpreadModel(FSM, Geo):
                     return
             return self.leader
 
+    def ego_search(self, steps=1, center=False, node=None, **kwargs):
+        '''Get a list of nodes in the ego network of *node* of radius *steps*'''
+        node = as_node(node if node is not None else self)
+        G = self.subgraph(**kwargs)
+        return nx.ego_graph(G, node, center=center, radius=steps).nodes()
+
+    def degree(self, node, force=False):
+        node = as_node(node)
+        if force or (not hasattr(self.model, '_degree')) or getattr(self.model, '_last_step', 0) < self.now:
+            self.model._degree = nx.degree_centrality(self.G)
+            self.model._last_step = self.now
+        return self.model._degree[node]
+
+    def betweenness(self, node, force=False):
+        node = as_node(node)
+        if force or (not hasattr(self.model, '_betweenness')) or getattr(self.model, '_last_step', 0) < self.now:
+            self.model._betweenness = nx.betweenness_centrality(self.G)
+            self.model._last_step = self.now
+        return self.model._betweenness[node]
+
 
 class TrainingAreaModel(FSM, Geo):
     """
@@ -194,14 +214,14 @@ class TerroristNetworkModel(TerroristSpreadModel):
                     break
 
     def get_distance(self, target):
-        source_x, source_y = nx.get_node_attributes(self.topology, 'pos')[self.id]
+        source_x, source_y = nx.get_node_attributes(self.G, 'pos')[self.id]
-        target_x, target_y = nx.get_node_attributes(self.topology, 'pos')[target]
+        target_x, target_y = nx.get_node_attributes(self.G, 'pos')[target]
         dx = abs( source_x - target_x )
         dy = abs( source_y - target_y )
         return ( dx ** 2 + dy ** 2 ) ** ( 1 / 2 )
 
     def shortest_path_length(self, target):
         try:
-            return nx.shortest_path_length(self.topology, self.id, target)
+            return nx.shortest_path_length(self.G, self.id, target)
         except nx.NetworkXNoPath:
             return float('inf')

examples/terrorism/TerroristNetworkModel.yml

@@ -1,13 +1,14 @@
 name: TerroristNetworkModel_sim
-max_time: 150 
+max_steps: 150 
 num_trials: 1
-network_params:
+model_params:
+  network_params:
     generator: random_geometric_graph
     radius: 0.2
     # generator: geographical_threshold_graph
     # theta: 20
     n: 100
-network_agents:
+  network_agents:
     - agent_class: TerroristNetworkModel.TerroristNetworkModel
       weight: 0.8
       state:
@@ -25,7 +26,6 @@ network_agents:
       state:
         id: civilian  # Civilian
 
-environment_params:
   # TerroristSpreadModel
   information_spread_intensity: 0.7
   terrorist_additional_influence: 0.035

examples/torvalds.yml

@@ -1,13 +1,14 @@
 ---
 name: torvalds_example
-max_time: 10
+max_steps: 10
 interval: 2
-agent_class: CounterModel
+model_params:
-default_state:
+  agent_class: CounterModel
+  default_state:
     skill_level: 'beginner'
-network_params:
+  network_params:
     path: 'torvalds.edgelist'
-states:
+  states:
     Torvalds:
       skill_level: 'God'
     balkian:

requirements.txt

@@ -2,8 +2,9 @@ networkx>=2.5
 numpy
 matplotlib
 pyyaml>=5.1
-pandas>=0.23
+pandas>=1
 SALib>=1.3
 Jinja2
-Mesa>=0.8.9
+Mesa>=1
 pydantic>=1.9
+sqlalchemy>=1.4

soil/__init__.py

@@ -1,8 +1,10 @@
+from __future__ import annotations
+
 import importlib
 import sys
 import os
-import pdb
 import logging
+import traceback
 
 from .version import __version__
 
@@ -16,11 +18,10 @@ from . import agents
 from .simulation import *
 from .environment import Environment
 from . import serialization
-from . import analysis
 from .utils import logger
 from .time import *
 
-def main():
+def main(cfg='simulation.yml', **kwargs):
     import argparse
     from . import simulation
 
@@ -29,7 +30,7 @@ def main():
     parser = argparse.ArgumentParser(description='Run a SOIL simulation')
     parser.add_argument('file', type=str,
                         nargs="?",
-                        default='simulation.yml',
+                        default=cfg,
                         help='Configuration file for the simulation (e.g., YAML or JSON)')
     parser.add_argument('--version', action='store_true',
                         help='Show version info and exit')
@@ -39,6 +40,8 @@ def main():
                         help='Do not store the results of the simulation to disk, show in terminal instead.')
     parser.add_argument('--pdb', action='store_true',
                         help='Use a pdb console in case of exception.')
+    parser.add_argument('--debug', action='store_true',
+                        help='Run a customized version of a pdb console to debug a simulation.')
     parser.add_argument('--graph', '-g', action='store_true',
                         help='Dump each trial\'s network topology as a GEXF graph. Defaults to false.')
     parser.add_argument('--csv', action='store_true',
@@ -51,9 +54,22 @@ def main():
                         help='Run trials serially and synchronously instead of in parallel. Defaults to false.')
     parser.add_argument('-e', '--exporter', action='append',
                         help='Export environment and/or simulations using this exporter')
+    parser.add_argument('--only-convert', '--convert', action='store_true',
+                        help='Do not run the simulation, only convert the configuration file(s) and output them.')
+
+
+    parser.add_argument("--set",
+                        metavar="KEY=VALUE",
+                        action='append',
+                        help="Set a number of parameters that will be passed to the simulation."
+                        "(do not put spaces before or after the = sign). "
+                        "If a value contains spaces, you should define "
+                        "it with double quotes: "
+                        'foo="this is a sentence". Note that '
+                        "values are always treated as strings.")
 
     args = parser.parse_args()
-    logging.basicConfig(level=getattr(logging, (args.level or 'INFO').upper()))
+    logger.setLevel(getattr(logging, (args.level or 'INFO').upper()))
 
     if args.version:
         return
@@ -65,9 +81,10 @@ def main():
 
     logger.info('Loading config file: {}'.format(args.file))
 
-    if args.pdb:
+    if args.pdb or args.debug:
         args.synchronous = True
-
+    if args.debug:
+        os.environ['SOIL_DEBUG'] = 'true'
 
     try:
         exporters = list(args.exporter or ['default', ])
@@ -82,18 +99,48 @@ def main():
         if not os.path.exists(args.file):
             logger.error('Please, input a valid file')
             return
-        simulation.run_from_config(args.file,
+        for sim in simulation.iter_from_config(args.file):
-                                   dry_run=args.dry_run,
+            if args.set:
+                for s in args.set:
+                    k, v = s.split('=', 1)[:2]
+                    v = eval(v)
+                    tail, *head = k.rsplit('.', 1)[::-1]
+                    target = sim
+                    if head:
+                        for part in head[0].split('.'):
+                            try:
+                                target = getattr(target, part)
+                            except AttributeError:
+                                target = target[part]
+                    try:
+                        setattr(target, tail, v)
+                    except AttributeError:
+                        target[tail] = v
+
+                if args.only_convert:
+                    print(sim.to_yaml())
+                    continue
+
+            sim.run_simulation(dry_run=args.dry_run,
                                exporters=exporters,
                                parallel=(not args.synchronous),
                                outdir=args.output,
-                                   exporter_params=exp_params)
+                               exporter_params=exp_params,
-    except Exception:
+                               **kwargs)
+
+    except Exception as ex:
         if args.pdb:
-            pdb.post_mortem()
+            from .debugging import post_mortem
+            print(traceback.format_exc())
+            post_mortem()
         else:
             raise
 
-
+def easy(cfg, debug=False):
+    sim = simulation.from_config(cfg)
+    if debug or os.environ.get('SOIL_DEBUG'):
+        from .debugging import setup
+        setup(sys._getframe().f_back)
+    return sim
 if __name__ == '__main__':
     main()

soil/agents/CounterModel.py

@@ -7,15 +7,13 @@ class CounterModel(NetworkAgent):
     in each step and adds it to its state.
     """
 
-    defaults = {
+    times = 0
-        'times': 0,
+    neighbors = 0
-        'neighbors': 0,
+    total = 0
-        'total': 0
-    }
 
     def step(self):
         # Outside effects
-        total = len(list(self.env.agents))
+        total = len(list(self.model.schedule._agents))
         neighbors = len(list(self.get_neighboring_agents()))
         self['times'] = self.get('times', 0) + 1
         self['neighbors'] = neighbors
@@ -28,17 +26,15 @@ class AggregatedCounter(NetworkAgent):
     in each step and adds it to its state.
     """
 
-    defaults = {
+    times = 0
-        'times': 0,
+    neighbors = 0
-        'neighbors': 0,
+    total = 0
-        'total': 0
-    }
 
     def step(self):
         # Outside effects
         self['times'] += 1
         neighbors = len(list(self.get_neighboring_agents()))
         self['neighbors'] += neighbors
-        total = len(list(self.env.agents))
+        total = len(list(self.model.schedule.agents))
         self['total'] += total
         self.debug('Running for step: {}. Total: {}'.format(self.now, total))

soil/agents/__init__.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import logging
 from collections import OrderedDict, defaultdict
 from collections.abc import MutableMapping, Mapping, Set
@@ -5,9 +7,13 @@ from abc import ABCMeta
 from copy import deepcopy, copy
 from functools import partial, wraps
 from itertools import islice, chain
-import json
+import inspect
+import types
+import textwrap
 import networkx as nx
 
+from typing import Any
+
 from mesa import Agent as MesaAgent
 from typing import Dict, List
 
@@ -27,7 +33,31 @@ class DeadAgent(Exception):
     pass
 
 
-class BaseAgent(MesaAgent, MutableMapping):
+class MetaAgent(ABCMeta):
+    def __new__(mcls, name, bases, namespace):
+        defaults = {}
+
+        # Re-use defaults from inherited classes
+        for i in bases:
+            if isinstance(i, MetaAgent):
+                defaults.update(i._defaults)
+
+        new_nmspc = {
+            '_defaults': defaults,
+        }
+
+        for attr, func in namespace.items():
+            if isinstance(func, types.FunctionType) or isinstance(func, property) or attr[0] == '_':
+                new_nmspc[attr] = func
+            elif attr == 'defaults':
+                defaults.update(func)
+            else:
+                defaults[attr] = copy(func)
+
+        return super().__new__(mcls=mcls, name=name, bases=bases, namespace=new_nmspc)
+
+
+class BaseAgent(MesaAgent, MutableMapping, metaclass=MetaAgent):
     """
     A special type of Mesa Agent that:
 
@@ -39,15 +69,12 @@ class BaseAgent(MesaAgent, MutableMapping):
     Any attribute that is not preceded by an underscore (`_`) will also be added to its state.
     """
 
-    defaults = {}
-
     def __init__(self,
                  unique_id,
                  model,
                  name=None,
                  interval=None,
-                 **kwargs
+                 **kwargs):
-    ):
         # Check for REQUIRED arguments
         # Initialize agent parameters
         if isinstance(unique_id, MesaAgent):
@@ -58,15 +85,16 @@ class BaseAgent(MesaAgent, MutableMapping):
         self.name = str(name) if name else'{}[{}]'.format(type(self).__name__, self.unique_id)
 
 
-        self._neighbors = None
         self.alive = True
 
         self.interval = interval or self.get('interval', 1)
-        self.logger = logging.getLogger(self.model.id).getChild(self.name)
+        logger = utils.logger.getChild(getattr(self.model, 'id', self.model)).getChild(self.name)
+        self.logger = logging.LoggerAdapter(logger, {'agent_name': self.name})
 
         if hasattr(self, 'level'):
             self.logger.setLevel(self.level)
-        for (k, v) in self.defaults.items():
+
+        for (k, v) in self._defaults.items():
             if not hasattr(self, k) or getattr(self, k) is None:
                 setattr(self, k, deepcopy(v))
 
@@ -74,10 +102,6 @@ class BaseAgent(MesaAgent, MutableMapping):
 
             setattr(self, k, v)
 
-        for (k, v) in getattr(self, 'defaults', {}).items():
-            if not hasattr(self, k) or getattr(self, k) is None:
-                setattr(self, k, v)
-
     def __hash__(self):
         return hash(self.unique_id)
 
@@ -89,14 +113,6 @@ class BaseAgent(MesaAgent, MutableMapping):
     def id(self):
         return self.unique_id
 
-    @property
-    def env(self):
-        return self.model
-
-    @env.setter
-    def env(self, model):
-        self.model = model
-
     @property
     def state(self):
         '''
@@ -108,19 +124,16 @@ class BaseAgent(MesaAgent, MutableMapping):
 
     @state.setter
     def state(self, value):
+        if not value:
+            return
         for k, v in value.items():
             self[k] = v
 
-    @property
-    def environment_params(self):
-        return self.model.environment_params
-
-    @environment_params.setter
-    def environment_params(self, value):
-        self.model.environment_params = value
-
     def __getitem__(self, key):
+        try:
             return getattr(self, key)
+        except AttributeError:
+            raise KeyError(f'key {key}  not found in agent')
 
     def __delitem__(self, key):
         return delattr(self, key)
@@ -138,10 +151,14 @@ class BaseAgent(MesaAgent, MutableMapping):
         return self.items()
 
     def keys(self):
-        return (k for k in self.__dict__ if k[0] != '_')
+        return (k for k in self.__dict__ if k[0] != '_' and k not in IGNORED_FIELDS)
 
-    def items(self):
+    def items(self, keys=None, skip=None):
-        return ((k, v) for (k, v) in self.__dict__.items() if k[0] != '_')
+        keys = keys if keys is not None else self.keys()
+        it = ((k, self.get(k, None)) for k in keys)
+        if skip:
+            return filter(lambda x: x[0] not in skip, it)
+        return it
         
     def get(self, key, default=None):
         return self[key] if key in self else default
@@ -154,11 +171,9 @@ class BaseAgent(MesaAgent, MutableMapping):
             # No environment
             return None
 
-    def die(self, remove=False):
+    def die(self):
-        self.info(f'agent {self.unique_id}  is dying')
+        self.info(f'agent dying')
         self.alive = False
-        if remove:
-            self.remove_node(self.id)
         return time.NEVER
 
     def step(self):
@@ -170,7 +185,7 @@ class BaseAgent(MesaAgent, MutableMapping):
         if not self.logger.isEnabledFor(level):
             return
         message = message + " ".join(str(i) for i in args)
-        message = " @{:>3}: {}".format(self.now, message)
+        message = "[@{:>4}]\t{:>10}: {}".format(self.now, repr(self), message)
         for k, v in kwargs:
             message += " {k}={v} ".format(k, v)
         extra = {}
@@ -179,33 +194,48 @@ class BaseAgent(MesaAgent, MutableMapping):
         extra['agent_name'] = self.name
         return self.logger.log(level, message, extra=extra)
 
-
-
     def debug(self, *args, **kwargs):
         return self.log(*args, level=logging.DEBUG, **kwargs)
 
     def info(self, *args, **kwargs):
         return self.log(*args, level=logging.INFO, **kwargs)
 
-# Alias
+    def count_agents(self, **kwargs):
-# Agent = BaseAgent
+        return len(list(self.get_agents(**kwargs)))
+
+    def get_agents(self, *args, **kwargs):
+        it = self.iter_agents(*args, **kwargs)
+        return list(it)
+
+    def iter_agents(self, *args, **kwargs):
+        yield from filter_agents(self.model.schedule._agents, *args, **kwargs)
+
+    def __str__(self):
+        return self.to_str()
+
+    def to_str(self, keys=None, skip=None, pretty=False):
+        content = dict(self.items(keys=keys))
+        if pretty and content:
+            d = content
+            content = '\n'
+            for k, v in d.items():
+                content += f'- {k}: {v}\n'
+            content = textwrap.indent(content, '    ')
+        return f"{repr(self)}{content}"
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}({self.unique_id})"
+
 
 class NetworkAgent(BaseAgent):
 
-    @property
+    def __init__(self, *args, topology, node_id, **kwargs):
-    def topology(self):
+        super().__init__(*args, **kwargs)
-        return self.env.topology_for(self.unique_id)
 
-    @property
+        self.topology = topology
-    def node_id(self):
+        self.node_id = node_id
-        return self.env.node_id_for(self.unique_id)
+        self.G = self.model.topologies[topology]
-
+        assert self.G
-    @property
-    def G(self):
-        return self.model.topologies[self._topology]
-
-    def count_agents(self, **kwargs):
-        return len(list(self.get_agents(**kwargs)))
 
     def count_neighboring_agents(self, state_id=None, **kwargs):
         return len(self.get_neighboring_agents(state_id=state_id, **kwargs))
@@ -213,57 +243,47 @@ class NetworkAgent(BaseAgent):
     def get_neighboring_agents(self, state_id=None, **kwargs):
         return self.get_agents(limit_neighbors=True, state_id=state_id, **kwargs)
 
-    def get_agents(self, *args, limit=None, **kwargs):
-        it = self.iter_agents(*args, **kwargs)
-        if limit is not None:
-            it = islice(it, limit)
-        return list(it)
-
     def iter_agents(self, unique_id=None, limit_neighbors=False, **kwargs):
+        unique_ids = None
+        if isinstance(unique_id, list):
+            unique_ids = set(unique_id)
+        elif unique_id is not None:
+            unique_ids = set([unique_id,])
+
         if limit_neighbors:
-            unique_id = [self.topology.nodes[node]['agent_id'] for node in self.topology.neighbors(self.node_id)]
+            neighbor_ids = set()
-            if not unique_id:
+            for node_id in self.G.neighbors(self.node_id):
+                if self.G.nodes[node_id].get('agent_id') is not None:
+                    neighbor_ids.add(node_id)
+            if unique_ids:
+                unique_ids = unique_ids & neighbor_ids
+            else:
+                unique_ids = neighbor_ids
+            if not unique_ids:
                 return
-
+            unique_ids = list(unique_ids)
-        yield from self.model.agents(unique_id=unique_id, **kwargs)
+        yield from super().iter_agents(unique_id=unique_ids, **kwargs)
-
 
     def subgraph(self, center=True, **kwargs):
         include = [self] if center else []
-        G = self.topology.subgraph(n.node_id for n in list(self.get_agents(**kwargs)+include))
+        G = self.G.subgraph(n.node_id for n in list(self.get_agents(**kwargs)+include))
         return G
 
-    def remove_node(self, unique_id):
+    def remove_node(self):
-        self.topology.remove_node(unique_id)
+        self.G.remove_node(self.node_id)
 
     def add_edge(self, other, edge_attr_dict=None, *edge_attrs):
-        # return super(NetworkAgent, self).add_edge(node1=self.id, node2=other, **kwargs)
+        if self.node_id not in self.G.nodes(data=False):
-        if self.unique_id not in self.topology.nodes(data=False):
             raise ValueError('{} not in list of existing agents in the network'.format(self.unique_id))
-        if other.unique_id not in self.topology.nodes(data=False):
+        if other.node_id not in self.G.nodes(data=False):
             raise ValueError('{} not in list of existing agents in the network'.format(other))
 
-        self.topology.add_edge(self.unique_id, other.unique_id, edge_attr_dict=edge_attr_dict, *edge_attrs)
+        self.G.add_edge(self.node_id, other.node_id, edge_attr_dict=edge_attr_dict, *edge_attrs)
 
-    def ego_search(self, steps=1, center=False, node=None, **kwargs):
+    def die(self, remove=True):
-        '''Get a list of nodes in the ego network of *node* of radius *steps*'''
+        if remove:
-        node = as_node(node if node is not None else self)
+            self.remove_node()
-        G = self.subgraph(**kwargs)
+        return super().die()
-        return nx.ego_graph(G, node, center=center, radius=steps).nodes()
-
-    def degree(self, node, force=False):
-        node = as_node(node)
-        if force or (not hasattr(self.model, '_degree')) or getattr(self.model, '_last_step', 0) < self.now:
-            self.model._degree = nx.degree_centrality(self.topology)
-            self.model._last_step = self.now
-        return self.model._degree[node]
-
-    def betweenness(self, node, force=False):
-        node = as_node(node)
-        if force or (not hasattr(self.model, '_betweenness')) or getattr(self.model, '_last_step', 0) < self.now:
-            self.model._betweenness = nx.betweenness_centrality(self.topology)
-            self.model._last_step = self.now
-        return self.model._betweenness[node]
 
 
 def state(name=None):
@@ -273,24 +293,29 @@ def state(name=None):
         The default value for state_id is the current state id.
         The default value for when is the interval defined in the environment.
         '''
+        if inspect.isgeneratorfunction(func):
+            orig_func = func
 
             @wraps(func)
-        def func_wrapper(self):
+            def func(self):
-            next_state = func(self)
+                while True:
-            when = None
+                    if not self._coroutine:
-            if next_state is None:
+                        self._coroutine = orig_func(self)
-                return when
                     try:
-                next_state, when = next_state
+                        n = next(self._coroutine)
-            except (ValueError, TypeError):
+                        if n:
-                pass
+                            return None, n
-            if next_state:
+                        return
+                    except StopIteration as ex:
+                        self._coroutine = None
+                        next_state = ex.value
+                        if next_state is not None:
                             self.set_state(next_state)
-            return when
+                        return next_state
 
-        func_wrapper.id = name or func.__name__
+        func.id = name or func.__name__
-        func_wrapper.is_default = False
+        func.is_default = False
-        return func_wrapper
+        return func
 
     if callable(name):
         return decorator(name)
@@ -303,60 +328,84 @@ def default_state(func):
     return func
 
 
-class MetaFSM(ABCMeta):
+class MetaFSM(MetaAgent):
-    def __init__(cls, name, bases, nmspc):
+    def __new__(mcls, name, bases, namespace):
-        super(MetaFSM, cls).__init__(name, bases, nmspc)
         states = {}
         # Re-use states from inherited classes
         default_state = None
         for i in bases:
             if isinstance(i, MetaFSM):
-                for state_id, state in i.states.items():
+                for state_id, state in i._states.items():
                     if state.is_default:
                         default_state = state
                     states[state_id] = state
 
         # Add new states
-        for name, func in nmspc.items():
+        for attr, func in namespace.items():
             if hasattr(func, 'id'):
                 if func.is_default:
                     default_state = func
                 states[func.id] = func
-        cls.default_state = default_state
+
-        cls.states = states
+        namespace.update({
+            '_default_state': default_state,
+            '_states': states,
+        })
+
+        return super(MetaFSM, mcls).__new__(mcls=mcls, name=name, bases=bases, namespace=namespace)
 
 
 class FSM(BaseAgent, metaclass=MetaFSM):
     def __init__(self, *args, **kwargs):
         super(FSM, self).__init__(*args, **kwargs)
         if not hasattr(self, 'state_id'):
-            if not self.default_state:
+            if not self._default_state:
                 raise ValueError('No default state specified for {}'.format(self.unique_id))
-            self.state_id = self.default_state.id
+            self.state_id = self._default_state.id
 
+        self._coroutine = None
         self.set_state(self.state_id)
 
     def step(self):
         self.debug(f'Agent {self.unique_id} @ state {self.state_id}')
-        interval = super().step()
+        default_interval = super().step()
-        if 'id' not in self.state:
-            if self.default_state:
-                self.set_state(self.default_state.id)
-            else:
-                raise Exception('{} has no valid state id or default state'.format(self))
-        interval = self.states[self.state_id](self) or interval
-        if not self.alive:
-            return time.NEVER
-        return interval
 
-    def set_state(self, state):
+        next_state = self._states[self.state_id](self)
+
+        when = None
+        try:
+            next_state, *when = next_state
+            if not when:
+                when = None
+            elif len(when) == 1:
+                when = when[0]
+            else:
+                raise ValueError('Too many values returned. Only state (and time) allowed')
+        except TypeError:
+            pass
+
+        if next_state is not None:
+            self.set_state(next_state)
+
+        return when or default_interval
+
+    def set_state(self, state, when=None):
         if hasattr(state, 'id'):
             state = state.id
-        if state not in self.states:
+        if state not in self._states:
             raise ValueError('{} is not a valid state'.format(state))
         self.state_id = state
+        if when is not None:
+            self.model.schedule.add(self, when=when)
         return state
 
+    def die(self):
+        return self.dead, super().die()
+
+    @state
+    def dead(self):
+        return self.die()
+
 
 def prob(prob, random):
     '''
@@ -476,81 +525,81 @@ def _convert_agent_classs(ind, to_string=False, **kwargs):
     return deserialize_definition(ind, **kwargs)
 
 
-def _agent_from_definition(definition, random, value=-1, unique_id=None):
+# def _agent_from_definition(definition, random, value=-1, unique_id=None):
-    """Used in the initialization of agents given an agent distribution."""
+#     """Used in the initialization of agents given an agent distribution."""
-    if value < 0:
+#     if value < 0:
-        value = random.random()
+#         value = random.random()
-    for d in sorted(definition, key=lambda x: x.get('threshold')):
+#     for d in sorted(definition, key=lambda x: x.get('threshold')):
-        threshold = d.get('threshold', (-1, -1))
+#         threshold = d.get('threshold', (-1, -1))
-        # Check if the definition matches by id (first) or by threshold
+#         # Check if the definition matches by id (first) or by threshold
-        if (unique_id is not None and unique_id in d.get('ids', [])) or \
+#         if (unique_id is not None and unique_id in d.get('ids', [])) or \
-           (value >= threshold[0] and value < threshold[1]):
+#            (value >= threshold[0] and value < threshold[1]):
-            state = {}
+#             state = {}
-            if 'state' in d:
+#             if 'state' in d:
-                state = deepcopy(d['state'])
+#                 state = deepcopy(d['state'])
-            return d['agent_class'], state
+#             return d['agent_class'], state
 
-    raise Exception('Definition for value {} not found in: {}'.format(value, definition))
+#     raise Exception('Definition for value {} not found in: {}'.format(value, definition))
 
 
-def _definition_to_dict(definition, random, size=None, default_state=None):
+# def _definition_to_dict(definition, random, size=None, default_state=None):
-    state = default_state or {}
+#     state = default_state or {}
-    agents = {}
+#     agents = {}
-    remaining = {}
+#     remaining = {}
-    if size:
+#     if size:
-        for ix in range(size):
+#         for ix in range(size):
-            remaining[ix] = copy(state)
+#             remaining[ix] = copy(state)
-    else:
+#     else:
-        remaining = defaultdict(lambda x: copy(state))
+#         remaining = defaultdict(lambda x: copy(state))
 
-    distro = sorted([item for item in definition if 'weight' in item])
+#     distro = sorted([item for item in definition if 'weight' in item])
 
-    id = 0
+#     id = 0
 
-    def init_agent(item, id=ix):
+#     def init_agent(item, id=ix):
-        while id in agents:
+#         while id in agents:
-            id += 1
+#             id += 1
 
-        agent = remaining[id]
+#         agent = remaining[id]
-        agent['state'].update(copy(item.get('state', {})))
+#         agent['state'].update(copy(item.get('state', {})))
-        agents[agent.unique_id] = agent
+#         agents[agent.unique_id] = agent
-        del remaining[id]
+#         del remaining[id]
-        return agent
+#         return agent
 
-    for item in definition:
+#     for item in definition:
-        if 'ids' in item:
+#         if 'ids' in item:
-            ids = item['ids']
+#             ids = item['ids']
-            del item['ids']
+#             del item['ids']
-            for id in ids:
+#             for id in ids:
-                agent = init_agent(item, id)
+#                 agent = init_agent(item, id)
 
-    for item in definition:
+#     for item in definition:
-        if 'number' in item:
+#         if 'number' in item:
-            times = item['number']
+#             times = item['number']
-            del item['number']
+#             del item['number']
-            for times in range(times):
+#             for times in range(times):
-                if size:
+#                 if size:
-                    ix = random.choice(remaining.keys())
+#                     ix = random.choice(remaining.keys())
-                    agent = init_agent(item, id)
+#                     agent = init_agent(item, id)
-                else:
+#                 else:
-                    agent = init_agent(item)
+#                     agent = init_agent(item)
-    if not size:
+#     if not size:
-        return agents
+#         return agents
 
-    if len(remaining) < 0:
+#     if len(remaining) < 0:
-        raise Exception('Invalid definition. Too many agents to add')
+#         raise Exception('Invalid definition. Too many agents to add')
 
 
-    total_weight = float(sum(s['weight'] for s in distro))
+#     total_weight = float(sum(s['weight'] for s in distro))
-    unit = size / total_weight
+#     unit = size / total_weight
 
-    for item in distro:
+#     for item in distro:
-        times = unit * item['weight']
+#         times = unit * item['weight']
-        del item['weight']
+#         del item['weight']
-        for times in range(times):
+#         for times in range(times):
-            ix = random.choice(remaining.keys())
+#             ix = random.choice(remaining.keys())
-            agent = init_agent(item, id)
+#             agent = init_agent(item, id)
-    return agents
+#     return agents
 
 
 class AgentView(Mapping, Set):
@@ -571,59 +620,43 @@ class AgentView(Mapping, Set):
 
     # Mapping methods
     def __len__(self):
-        return sum(len(x) for x in self._agents.values())
+        return len(self._agents)
 
     def __iter__(self):
-        yield from iter(chain.from_iterable(g.values() for g in self._agents.values()))
+        yield from self._agents.values()
 
     def __getitem__(self, agent_id):
         if isinstance(agent_id, slice):
             raise ValueError(f"Slicing is not supported")
-        for group in self._agents.values():
+        if agent_id in self._agents:
-            if agent_id in group:
+            return self._agents[agent_id]
-                return group[agent_id]
         raise ValueError(f"Agent {agent_id} not found")
 
     def filter(self, *args, **kwargs):
-        yield from filter_groups(self._agents, *args, **kwargs)
+        yield from filter_agents(self._agents, *args, **kwargs)
 
     def one(self, *args, **kwargs):
-        return next(filter_groups(self._agents, *args, **kwargs))
+        return next(filter_agents(self._agents, *args, **kwargs))
 
     def __call__(self, *args, **kwargs):
         return list(self.filter(*args, **kwargs))
 
     def __contains__(self, agent_id):
-        return any(agent_id in g for g in self._agents)
+        return agent_id in self._agents
 
     def __str__(self):
-        return str(list(a.unique_id for a in self))
+        return str(list(unique_id for unique_id in self.keys()))
 
     def __repr__(self):
         return f"{self.__class__.__name__}({self})"
 
 
-def filter_groups(groups, *, group=None, **kwargs):
+def filter_agents(agents, *id_args, unique_id=None, state_id=None, agent_class=None, ignore=None, state=None,
-    assert isinstance(groups, dict)
+                  limit=None, **kwargs):
-
-    if group is not None and not isinstance(group, list):
-        group = [group]
-
-    if group:
-        groups = list(groups[g] for g in group if g in groups)
-    else:
-        groups = list(groups.values())
-
-    agents = chain.from_iterable(filter_group(g, **kwargs) for g in groups)
-
-    yield from agents
-
-
-def filter_group(group, *id_args, unique_id=None, state_id=None, agent_class=None, ignore=None, state=None, **kwargs):
     '''
     Filter agents given as a dict, by the criteria given as arguments (e.g., certain type or state id).
     '''
-    assert isinstance(group, dict)
+    assert isinstance(agents, dict)
 
     ids = []
 
@@ -636,6 +669,11 @@ def filter_group(group, *id_args, unique_id=None, state_id=None, agent_class=Non
     if id_args:
         ids += id_args
 
+    if ids:
+        f = (agents[aid] for aid in ids if aid in agents)
+    else:
+        f = (a for a in agents.values())
+
     if state_id is not None and not isinstance(state_id, (tuple, list)):
         state_id = tuple([state_id])
 
@@ -646,12 +684,6 @@ def filter_group(group, *id_args, unique_id=None, state_id=None, agent_class=Non
         except TypeError:
             agent_class = tuple([agent_class])
 
-    if ids:
-        agents = (group[aid] for aid in ids if aid in group)
-    else:
-        agents = (a for a in group.values())
-
-    f = agents
     if ignore:
         f = filter(lambda x: x not in ignore, f)
 
@@ -667,83 +699,125 @@ def filter_group(group, *id_args, unique_id=None, state_id=None, agent_class=Non
     for k, v in state.items():
         f = filter(lambda agent: agent.state.get(k, None) == v, f)
 
+    if limit is not None:
+        f = islice(f, limit)
+
     yield from f
 
 
-def from_config(cfg: Dict[str, config.AgentConfig], env, random):
+def from_config(cfg: config.AgentConfig, random, topologies: Dict[str, nx.Graph] = None) -> List[Dict[str, Any]]:
     '''
-    Agents are specified in groups.
+    This function turns an agentconfig into a list of individual "agent specifications", which are just a dictionary
-    Each group can be specified in two ways, either through a fixed list in which each item has
+    with the parameters that the environment will use to construct each agent.
-    has the agent type, number of agents to create, and the other parameters, or through what we call
+
-    an `agent distribution`, which is similar but instead of number of agents, it specifies the weight
+    This function does NOT return a list of agents, mostly because some attributes to the agent are not known at the
-    of each agent type.
+    time of calling this function, such as `unique_id`.
     '''
-    default = cfg.get('default', None)
+    default = cfg or config.AgentConfig()
-    return {k: _group_from_config(c, default=default, env=env, random=random) for (k, c)  in cfg.items() if k is not 'default'}
+    if not isinstance(cfg, config.AgentConfig):
+        cfg = config.AgentConfig(**cfg)
+    return _agents_from_config(cfg, topologies=topologies, random=random)
 
 
-def _group_from_config(cfg: config.AgentConfig, default: config.SingleAgentConfig, env, random):
+def _agents_from_config(cfg: config.AgentConfig,
+                        topologies: Dict[str, nx.Graph],
+                        random) -> List[Dict[str, Any]]:
     if cfg and not isinstance(cfg, config.AgentConfig):
         cfg = config.AgentConfig(**cfg)
-    if default and not isinstance(default, config.SingleAgentConfig):
-        default = config.SingleAgentConfig(**default)
 
-    agents = {}
+    agents = []
+
+    assigned = defaultdict(int)
+
     if cfg.fixed is not None:
-        agents = _from_fixed(cfg.fixed, topology=cfg.topology, default=default, env=env)
+        agents, counts = _from_fixed(cfg.fixed, topology=cfg.topology, default=cfg)
-    if cfg.distribution:
+        assigned.update(counts)
-        n = cfg.n or len(env.topologies[cfg.topology or default.topology])
-        target = n - len(agents)
-        agents.update(_from_distro(cfg.distribution, target,
-                                   topology=cfg.topology or default.topology,
-                                   default=default,
-                                   env=env, random=random))
-        assert len(agents) == n
-    if cfg.override:
-        for attrs in cfg.override:
-            if attrs.filter:
-                filtered = list(filter_group(agents, **attrs.filter))
-            else:
-                filtered = list(agents)
 
-            if attrs.n > len(filtered):
+    n = cfg.n
-                raise ValueError(f'Not enough agents to sample. Got {len(filtered)}, expected >= {attrs.n}')
+
-            for agent in random.sample(filtered, attrs.n):
+    if cfg.distribution:
-                agent.state.update(attrs.state)
+        topo_size = {top: len(topologies[top]) for top in topologies}
+
+        grouped = defaultdict(list)
+        total = []
+
+        for d in cfg.distribution:
+            if d.strategy == config.Strategy.topology:
+                topology = d.topology if ('topology' in d.__fields_set__) else cfg.topology
+                if not topology:
+                    raise ValueError('The "topology" strategy only works if the topology parameter is specified')
+                if topology not in topo_size:
+                    raise ValueError(f'Unknown topology selected: { topology }. Make sure the topology has been defined')
+
+                grouped[topology].append(d)
+
+            if d.strategy == config.Strategy.total:
+                if not cfg.n:
+                    raise ValueError('Cannot use the "total" strategy without providing the total number of agents')
+                total.append(d)
+
+        
+        for (topo, distro) in grouped.items():
+            if not topologies or topo not in topo_size:
+                raise ValueError(
+                    'You need to specify a target number of agents for the distribution \
+                    or a configuration with a topology, along with a dictionary with \
+                    all the available topologies')
+            n = len(topologies[topo])
+            target = topo_size[topo] - assigned[topo]
+            new_agents = _from_distro(cfg.distribution, target,
+                                      topology=topo,
+                                      default=cfg,
+                                      random=random)
+            assigned[topo] += len(new_agents)
+            agents += new_agents
+
+        if total:
+          remaining = n - sum(assigned.values())
+          agents += _from_distro(total, remaining,
+                                topology='',  # DO NOT assign to any topology
+                                default=cfg,
+                                random=random)
+
+
+        if sum(assigned.values()) != sum(topo_size.values()):
+            utils.logger.warn(f'The total number of agents does not match the total number of nodes in '
+                              'every topology. This may be due to a definition error: assigned: '
+                              f'{ assigned } total sizes: { topo_size }')
 
     return agents
 
 
-def _from_fixed(lst: List[config.FixedAgentConfig], topology: str, default: config.SingleAgentConfig, env):
+def _from_fixed(lst: List[config.FixedAgentConfig], topology: str, default: config.SingleAgentConfig) -> List[Dict[str, Any]]:
-    agents = {}
+    agents = []
+
+    counts = {}
 
     for fixed in lst:
-        agent_id = fixed.agent_id
+        agent = {}
-        if agent_id is None:
+        if default:
-            agent_id = env.next_id()
+            agent = default.state.copy()
+        agent.update(fixed.state)
+        cls = serialization.deserialize(fixed.agent_class or (default and default.agent_class))
+        agent['agent_class'] = cls
+        topo = fixed.topology if ('topology' in fixed.__fields_set__) else topology or default.topology
 
-        cls = serialization.deserialize(fixed.agent_class or default.agent_class)
+        if topo:
-        state = fixed.state.copy()
+            agent['topology'] = topo
-        state.update(default.state)
+        if not fixed.hidden:
-        agent = cls(unique_id=agent_id,
+            counts[topo] = counts.get(topo, 0) + 1
-                    model=env,
+        agents.append(agent)
-                    **state)
-        topology = fixed.topology if (fixed.topology is not None) else (topology or default.topology)
-        if topology:
-            env.agent_to_node(agent_id, topology, fixed.node_id)
-        agents[agent.unique_id] = agent
 
-    return agents
+    return agents, counts
 
 
 def _from_distro(distro: List[config.AgentDistro],
                  n: int,
                  topology: str,
                  default: config.SingleAgentConfig,
-                 env,
+                 random) -> List[Dict[str, Any]]:
-                 random):
 
-    agents = {}
+    agents = []
 
     if n is None:
         if any(lambda dist: dist.n is None, distro):
@@ -775,19 +849,16 @@ def _from_distro(distro: List[config.AgentDistro],
 
     for idx in indices:
         d = distro[idx]
+        agent = d.state.copy()
         cls = classes[idx]
-        agent_id = env.next_id()
+        agent['agent_class'] = cls
-        state = d.state.copy()
         if default:
-            state.update(default.state)
+            agent.update(default.state)
-        agent = cls(unique_id=agent_id, model=env, **state)
+        # agent = cls(unique_id=agent_id, model=env, **state)
-        topology = d.topology if (d.topology is not None) else topology or default.topology
+        topology = d.topology if ('topology' in d.__fields_set__) else topology or default.topology
         if topology:
-            env.agent_to_node(agent.unique_id, topology)
+            agent['topology'] = topology
-        assert agent.name is not None
+        agents.append(agent)
-        assert agent.name != 'None'
-        assert agent.name
-        agents[agent.unique_id] = agent
 
     return agents
 

soil/analysis.py

@@ -1,206 +0,0 @@
-import pandas as pd
-
-import glob
-import yaml
-from os.path import join
-
-from . import serialization
-from tsih import History
-
-
-def read_data(*args, group=False, **kwargs):
-    iterable = _read_data(*args, **kwargs)
-    if group:
-        return group_trials(iterable)
-    else:
-        return list(iterable)
-
-
-def _read_data(pattern, *args, from_csv=False, process_args=None, **kwargs):
-    if not process_args:
-        process_args = {}
-    for folder in glob.glob(pattern):
-        config_file = glob.glob(join(folder, '*.yml'))[0]
-        config = yaml.load(open(config_file), Loader=yaml.SafeLoader)
-        df = None
-        if from_csv:
-            for trial_data in sorted(glob.glob(join(folder,
-                                                    '*.environment.csv'))):
-                df = read_csv(trial_data, **kwargs)
-                yield config_file, df, config
-        else:
-            for trial_data in sorted(glob.glob(join(folder, '*.sqlite'))):
-                df = read_sql(trial_data, **kwargs)
-                yield config_file, df, config
-
-
-def read_sql(db, *args, **kwargs):
-    h = History(db_path=db, backup=False, readonly=True)
-    df = h.read_sql(*args, **kwargs)
-    return df
-
-
-def read_csv(filename, keys=None, convert_types=False, **kwargs):
-    '''
-    Read a CSV in canonical form: ::
-
-        <agent_id, t_step, key, value, value_type>
-
-    '''
-    df = pd.read_csv(filename)
-    if convert_types:
-        df = convert_types_slow(df)
-    if keys:
-        df = df[df['key'].isin(keys)]
-    df = process_one(df)
-    return df
-
-
-def convert_row(row):
-    row['value'] = serialization.deserialize(row['value_type'], row['value'])
-    return row
-
-
-def convert_types_slow(df):
-    '''
-    Go over every column in a dataframe and convert it to the type determined by the `get_types`
-    function.
-
-    This is a slow operation.
-    '''
-    dtypes = get_types(df)
-    for k, v in dtypes.items():
-        t = df[df['key']==k]
-        t['value'] = t['value'].astype(v)
-    df = df.apply(convert_row, axis=1)
-    return df
-
-
-def split_processed(df):
-    env = df.loc[:, df.columns.get_level_values(1).isin(['env', 'stats'])]
-    agents = df.loc[:, ~df.columns.get_level_values(1).isin(['env', 'stats'])]
-    return env, agents
-
-
-def split_df(df):
-    '''
-    Split a dataframe in two dataframes: one with the history of agents,
-    and one with the environment history
-    '''
-    envmask = (df['agent_id'] == 'env')
-    n_env = envmask.sum()
-    if n_env == len(df):
-        return df, None
-    elif n_env == 0:
-        return None, df
-    agents, env = [x for _, x in df.groupby(envmask)]
-    return env, agents
-
-
-def process(df, **kwargs):
-    '''
-    Process a dataframe in canonical form ``(t_step, agent_id, key, value, value_type)`` into
-    two dataframes with a column per key: one with the history of the agents, and one for the
-    history of the environment.
-    '''
-    env, agents = split_df(df)
-    return process_one(env, **kwargs), process_one(agents, **kwargs)
-
-
-def get_types(df):
-    '''
-    Get the value type for every key stored in a raw history dataframe.
-    '''
-    dtypes = df.groupby(by=['key'])['value_type'].unique()
-    return {k:v[0] for k,v in dtypes.iteritems()}
-
-
-def process_one(df, *keys, columns=['key', 'agent_id'], values='value',
-                fill=True, index=['t_step',],
-                aggfunc='first', **kwargs):
-    '''
-    Process a dataframe in canonical form ``(t_step, agent_id, key, value, value_type)`` into
-    a dataframe with a column per key
-    '''
-    if df is None:
-        return df
-    if keys:
-        df = df[df['key'].isin(keys)]
-
-    df = df.pivot_table(values=values, index=index, columns=columns,
-                        aggfunc=aggfunc, **kwargs)
-    if fill:
-        df = fillna(df)
-    return df
-
-
-def get_count(df, *keys):
-    '''
-    For every t_step and key, get the value count.
-
-    The result is a dataframe with `t_step` as index, an a multiindex column based on `key` and the values found for each `key`.
-    '''
-    if keys:
-        df = df[list(keys)]
-        df.columns = df.columns.remove_unused_levels()
-    counts = pd.DataFrame()
-    for key in df.columns.levels[0]:
-        g = df[[key]].apply(pd.Series.value_counts, axis=1).fillna(0)
-        for value, series in g.iteritems():
-            counts[key, value] = series
-    counts.columns = pd.MultiIndex.from_tuples(counts.columns)
-    return counts
-
-
-def get_majority(df, *keys):
-    '''
-    For every t_step and key, get the value of the majority of agents
-
-    The result is a dataframe with `t_step` as index, and columns based on `key`.
-    '''
-    df = get_count(df, *keys)
-    return df.stack(level=0).idxmax(axis=1).unstack()
-
-
-def get_value(df, *keys, aggfunc='sum'):
-    '''
-    For every t_step and key, get the value of *numeric columns*, aggregated using a specific function.
-    '''
-    if keys:
-        df = df[list(keys)]
-        df.columns = df.columns.remove_unused_levels()
-    df = df.select_dtypes('number')
-    return df.groupby(level='key', axis=1).agg(aggfunc)
-
-
-def plot_all(*args, plot_args={}, **kwargs):
-    '''
-    Read all the trial data and plot the result of applying a function on them.
-    '''
-    dfs = do_all(*args, **kwargs)
-    ps = []
-    for line in dfs:
-        f, df, config = line
-        if len(df) < 1:
-            continue
-        df.plot(title=config['name'], **plot_args)
-        ps.append(df)
-    return ps
-
-def do_all(pattern, func, *keys, include_env=False, **kwargs):
-    for config_file, df, config in read_data(pattern, keys=keys):
-        if len(df) < 1:
-            continue
-        p = func(df, *keys, **kwargs)
-        yield config_file, p, config
-
-
-def group_trials(trials, aggfunc=['mean', 'min', 'max', 'std']):
-    trials = list(trials)
-    trials = list(map(lambda x: x[1] if isinstance(x, tuple) else x, trials))
-    return pd.concat(trials).groupby(level=0).agg(aggfunc).reorder_levels([2, 0,1] ,axis=1)
-
-
-def fillna(df):
-    new_df = df.ffill(axis=0)
-    return new_df

soil/config.py

@@ -1,12 +1,18 @@
 from __future__ import annotations
+
+from enum import Enum
 from pydantic import BaseModel, ValidationError, validator, root_validator
 
 import yaml
 import os
 import sys
 
+
 from typing import Any, Callable, Dict, List, Optional, Union, Type
 from pydantic import BaseModel, Extra
+
+from . import environment, utils
+
 import networkx as nx
 
 
@@ -36,7 +42,6 @@ class NetParams(BaseModel, extra=Extra.allow):
 
 
 class NetConfig(BaseModel):
-    group: str = 'network'
     params: Optional[NetParams]
     topology: Optional[Union[Topology, nx.Graph]]
     path: Optional[str]
@@ -56,9 +61,6 @@ class NetConfig(BaseModel):
 
 
 class EnvConfig(BaseModel):
-    environment_class: Union[Type, str] = 'soil.Environment'
-    params: Dict[str, Any] = {}
-    schedule: Union[Type, str] = 'soil.time.TimedActivation'
 
     @staticmethod
     def default():
@@ -67,19 +69,19 @@ class EnvConfig(BaseModel):
 
 class SingleAgentConfig(BaseModel):
     agent_class: Optional[Union[Type, str]] = None
-    agent_id: Optional[int] = None
+    unique_id: Optional[int] = None
     topology: Optional[str] = None
     node_id: Optional[Union[int, str]] = None
-    name: Optional[str] = None
     state: Optional[Dict[str, Any]] = {}
 
+
 class FixedAgentConfig(SingleAgentConfig):
     n: Optional[int] = 1
+    hidden: Optional[bool] = False  # Do not count this agent towards total agent count
 
     @root_validator
     def validate_all(cls,  values):
         if values.get('agent_id', None) is not None and values.get('n', 1) > 1:
-            print(values)
             raise ValueError(f"An agent_id can only be provided when there is only one agent ({values.get('n')} given)")
         return values
 
@@ -88,13 +90,19 @@ class OverrideAgentConfig(FixedAgentConfig):
     filter: Optional[Dict[str, Any]] = None
 
 
+class Strategy(Enum):
+    topology = 'topology'
+    total = 'total'
+
+
 class AgentDistro(SingleAgentConfig):
     weight: Optional[float] = 1
+    strategy: Strategy = Strategy.topology
 
 
 class AgentConfig(SingleAgentConfig):
     n: Optional[int] = None
-    topology: Optional[str] = None
+    topology: Optional[str]
     distribution: Optional[List[AgentDistro]] = None
     fixed: Optional[List[FixedAgentConfig]] = None
     override: Optional[List[OverrideAgentConfig]] = None
@@ -110,19 +118,32 @@ class AgentConfig(SingleAgentConfig):
         return values
 
 
-class Config(BaseModel, extra=Extra.forbid):
+class Config(BaseModel, extra=Extra.allow):
     version: Optional[str] = '1'
 
-    id: str = 'Unnamed Simulation'
+    name: str = 'Unnamed Simulation'
+    description: Optional[str] = None
     group: str = None
     dir_path: Optional[str] = None
     num_trials: int = 1
     max_time: float = 100
+    max_steps: int = -1
     interval: float = 1
     seed: str = ""
+    dry_run: bool = False
 
-    model_class: Union[Type, str]
+    model_class: Union[Type, str] = environment.Environment
-    model_parameters: Optiona[Dict[str, Any]] = {}
+    model_params: Optional[Dict[str, Any]] = {}
+
+    visualization_params: Optional[Dict[str, Any]] = {}
+
+    @classmethod
+    def from_raw(cls, cfg):
+        if isinstance(cfg, Config):
+            return cfg
+        if cfg.get('version', '1') == '1' and any(k in cfg for k in ['agents', 'agent_class', 'topology', 'environment_class']):
+            return convert_old(cfg)
+        return Config(**cfg)
 
 
 def convert_old(old, strict=True):
@@ -132,87 +153,84 @@ def convert_old(old, strict=True):
     This is still a work in progress and might not work in many cases.
     '''
 
-    #TODO: implement actual conversion
+    utils.logger.warning('The old configuration format is deprecated. The converted file MAY NOT yield the right results')
-    print('The old configuration format is no longer supported. \
-    Update your config files or run Soil==0.20')
-    raise NotImplementedError()
 
-
+    new = old.copy()
-    new = {}
-
-    general = {}
-    for k in ['id', 
-              'group',
-              'dir_path',
-              'num_trials',
-              'max_time',
-              'interval',
-              'seed']:
-        if k in old:
-            general[k] = old[k]
-
-    if 'name' in old:
-        general['id'] = old['name']
 
     network = {}
 
+    if 'topology' in old:
+        del new['topology']
+        network['topology'] = old['topology']
 
     if 'network_params' in old and old['network_params']:
+        del new['network_params']
         for (k, v) in old['network_params'].items():
             if k == 'path':
                 network['path'] = v
             else:
                 network.setdefault('params', {})[k] = v
 
-    if 'topology' in old:
+    topologies = {}
-        network['topology'] = old['topology']
+    if network:
+        topologies['default'] = network
 
-    agents = {
-        'network': {},
-        'default': {},
-    }
-
-    if 'agent_class' in old:
-        agents['default']['agent_class'] = old['agent_class']
-
-    if 'default_state' in old:
-        agents['default']['state'] = old['default_state']
 
+    agents = {'fixed': [], 'distribution': []}
 
     def updated_agent(agent):
+        '''Convert an agent definition'''
         newagent = dict(agent)
-        newagent['agent_class'] = newagent['agent_class']
-        del newagent['agent_class']
         return newagent
 
-    for agent in old.get('environment_agents', []):
-        agents['environment'] = {'distribution': [], 'fixed': []}
-        if 'agent_id' in agent:
-            agent['name'] = agent['agent_id']
-            del agent['agent_id']
-        agents['environment']['fixed'].append(updated_agent(agent))
-
     by_weight = []
     fixed = []
     override = []
 
-    if 'network_agents' in old:
+    if 'environment_agents' in new:
-        agents['network']['topology'] = 'default'
 
-        for agent in old['network_agents']:
+        for agent in new['environment_agents']:
+            agent.setdefault('state', {})['group'] = 'environment'
+            if 'agent_id' in agent:
+                agent['state']['name'] = agent['agent_id']
+                del agent['agent_id']
+            agent['hidden'] = True
+            agent['topology'] = None
+            fixed.append(updated_agent(agent))
+        del new['environment_agents']
+
+
+    if 'agent_class' in old:
+        del new['agent_class']
+        agents['agent_class'] = old['agent_class']
+
+    if 'default_state' in old:
+        del new['default_state']
+        agents['state'] = old['default_state']
+
+    if 'network_agents' in old:
+        agents['topology'] = 'default'
+
+        agents.setdefault('state', {})['group'] = 'network'
+
+        for agent in new['network_agents']:
             agent = updated_agent(agent)
             if 'agent_id' in agent:
+                agent['state']['name'] = agent['agent_id']
+                del agent['agent_id']
                 fixed.append(agent)
             else:
                 by_weight.append(agent)
+        del new['network_agents']
 
     if 'agent_class' in old and (not fixed and not by_weight):
-        agents['network']['topology'] = 'default'
+        agents['topology'] = 'default'
-        by_weight = [{'agent_class': old['agent_class']}]
+        by_weight = [{'agent_class': old['agent_class'], 'weight': 1}]
 
     
     # TODO: translate states properly
     if 'states' in old:
+        del new['states']
         states = old['states']
         if isinstance(states, dict):
             states = states.items()
@@ -220,22 +238,29 @@ def convert_old(old, strict=True):
             states = enumerate(states)
         for (k, v) in states:
             override.append({'filter': {'node_id': k},
-                             'state': v
+                             'state': v})
-            })
 
-    agents['network']['override'] = override
+    agents['override'] = override
-    agents['network']['fixed'] = fixed
+    agents['fixed'] = fixed
-    agents['network']['distribution'] = by_weight
+    agents['distribution'] = by_weight
+
+
+    model_params = {}
+    if 'environment_params' in new:
+        del new['environment_params']
+        model_params = dict(old['environment_params'])
 
-    environment = {'params': {}}
     if 'environment_class' in old:
-        environment['environment_class'] = old['environment_class']
+        del new['environment_class']
+        new['model_class'] = old['environment_class']
 
-    for (k, v) in old.get('environment_params', {}).items():
+    if 'dump' in old:
-        environment['params'][k] = v
+        del new['dump']
+        new['dry_run'] = not old['dump']
+
+    model_params['topologies'] = topologies
+    model_params['agents'] = agents
 
     return Config(version='2',
-                  general=general,
+                  model_params=model_params,
-                  topologies={'default': network},
+                  **new)
-                  environment=environment,
-                  agents=agents)

soil/debugging.py

@@ -0,0 +1,151 @@
+from __future__ import annotations
+
+import pdb
+import sys
+import os
+
+from textwrap import indent
+from functools import wraps
+
+from .agents import FSM, MetaFSM
+
+
+def wrapcmd(func):
+    @wraps(func)
+    def wrapper(self, arg: str, temporary=False):
+        sys.settrace(self.trace_dispatch)
+
+        known = globals()
+        known.update(self.curframe.f_globals)
+        known.update(self.curframe.f_locals)
+        known['agent'] = known.get('self', None)
+        known['model'] = known.get('self', {}).get('model')
+        known['attrs'] = arg.strip().split()
+
+        exec(func.__code__, known, known)
+
+    return wrapper
+
+
+class Debug(pdb.Pdb):
+    def __init__(self, *args, skip_soil=False, **kwargs):
+        skip = kwargs.get('skip', [])
+        if skip_soil:
+            skip.append('soil.*')
+            skip.append('mesa.*')
+        super(Debug, self).__init__(*args, skip=skip, **kwargs)
+        self.prompt = "[soil-pdb] "
+
+    @staticmethod
+    def _soil_agents(model, attrs=None, pretty=True, **kwargs):
+        for agent in model.agents(**kwargs):
+            d = agent
+            print(' - ' + indent(agent.to_str(keys=attrs, pretty=pretty), '  '))
+
+    @wrapcmd
+    def do_soil_agents():
+        return Debug._soil_agents(model, attrs=attrs or None)
+
+    do_sa = do_soil_agents
+
+    @wrapcmd
+    def do_soil_list():
+        return Debug._soil_agents(model, attrs=['state_id'], pretty=False)
+
+    do_sl = do_soil_list
+
+    @wrapcmd
+    def do_soil_self():
+        if not agent:
+            print('No agent available')
+            return
+
+        keys = None
+        if attrs:
+            keys = []
+            for k in attrs:
+                for key in agent.keys():
+                    if key.startswith(k):
+                        keys.append(key)
+
+        print(agent.to_str(pretty=True, keys=keys))
+
+    do_ss = do_soil_self
+
+    def do_break_state(self, arg: str, temporary=False):
+        '''
+        Break before a specified state is stepped into.
+        '''
+
+        klass = None
+        state = arg.strip()
+        if not state:
+            self.error("Specify at least a state name")
+            return
+
+        comma = arg.find(':')
+        if comma > 0:
+            state = arg[comma+1:].lstrip()
+            klass = arg[:comma].rstrip()
+            klass = eval(klass,
+                         self.curframe.f_globals,
+                         self.curframe_locals)
+
+        if klass:
+            klasses = [klass]
+        else:
+            klasses = [k for k in self.curframe.f_globals.values() if isinstance(k, type) and issubclass(k, FSM)]
+            print(klasses)
+            if not klasses:
+                self.error('No agent classes found')
+        
+        for klass in klasses:
+            try:
+                func = getattr(klass, state)
+            except AttributeError:
+                continue
+            if hasattr(func, '__func__'):
+                func = func.__func__
+
+            code = func.__code__
+            #use co_name to identify the bkpt (function names
+            #could be aliased, but co_name is invariant)
+            funcname = code.co_name
+            lineno = code.co_firstlineno
+            filename = code.co_filename
+
+            # Check for reasonable breakpoint
+            line = self.checkline(filename, lineno)
+            if not line:
+                raise ValueError('no line found')
+                # now set the break point
+            cond = None
+            existing = self.get_breaks(filename, line)
+            if existing:
+                self.message("Breakpoint already exists at %s:%d" %
+                              (filename, line))
+                continue
+            err = self.set_break(filename, line, temporary, cond, funcname)
+            if err:
+                self.error(err)
+            else:
+                bp = self.get_breaks(filename, line)[-1]
+                self.message("Breakpoint %d at %s:%d" %
+                              (bp.number, bp.file, bp.line))
+    do_bs = do_break_state
+
+
+def setup(frame=None):
+    debugger = Debug()
+    frame = frame or sys._getframe().f_back
+    debugger.set_trace(frame)
+
+def debug_env():
+    if os.environ.get('SOIL_DEBUG'):
+        return setup(frame=sys._getframe().f_back)
+
+def post_mortem(traceback=None):
+    p = Debug()
+    t = sys.exc_info()[2]
+    p.reset()
+    p.interaction(None, t)

soil/environment.py

@@ -1,4 +1,5 @@
 from __future__ import annotations
+
 import os
 import sqlite3
 import math
@@ -17,9 +18,7 @@ import networkx as nx
 from mesa import Model
 from mesa.datacollection import DataCollector
 
-from . import serialization, analysis, utils, time, network
+from . import agents as agentmod, config, serialization, utils, time, network
-
-from .agents import AgentView, BaseAgent, NetworkAgent, from_config as agents_from_config
 
 
 Record = namedtuple('Record', 'dict_id t_step key value')
@@ -39,12 +38,12 @@ class BaseEnvironment(Model):
     """
 
     def __init__(self,
-                 env_id='unnamed_env',
+                 id='unnamed_env',
                  seed='default',
                  schedule=None,
                  dir_path=None,
                  interval=1,
-                 agent_class=BaseAgent,
+                 agent_class=None,
                  agents: [tuple[type, Dict[str, Any]]] = {},
                  agent_reporters: Optional[Any] = None,
                  model_reporters: Optional[Any] = None,
@@ -54,7 +53,7 @@ class BaseEnvironment(Model):
         super().__init__(seed=seed)
         self.current_id = -1
 
-        self.id = env_id
+        self.id = id
 
         self.dir_path = dir_path or os.getcwd()
 
@@ -62,7 +61,7 @@ class BaseEnvironment(Model):
             schedule = time.TimedActivation(self)
         self.schedule = schedule
 
-        self.agent_class = agent_class
+        self.agent_class = agent_class or agentmod.BaseAgent
 
         self.init_agents(agents)
 
@@ -78,25 +77,51 @@ class BaseEnvironment(Model):
             tables=tables,
         )
 
-    def __read_agent_tuple(self, tup):
+    def _read_single_agent(self, agent):
-        cls = self.agent_class
+        agent = dict(**agent)
-        args = tup
+        cls = agent.pop('agent_class', None) or self.agent_class
-        if isinstance(tup, tuple):
+        unique_id = agent.pop('unique_id', None)
-            cls = tup[0]
+        if unique_id is None:
-            args = tup[1]
+            unique_id = self.next_id()
-        return serialization.deserialize(cls)(unique_id=self.next_id(),
+
-                                              model=self, **args)
+        return serialization.deserialize(cls)(unique_id=unique_id,
+                                              model=self, **agent)
+
+    def init_agents(self, agents: Union[config.AgentConfig, [Dict[str, Any]]] = {}):
+        if not agents:
+            return
+
+        lst = agents
+        override = []
+        if not isinstance(lst, list):
+            if not isinstance(agents, config.AgentConfig):
+                lst = config.AgentConfig(**agents)
+            if lst.override:
+                override = lst.override
+            lst = agentmod.from_config(lst,
+                                       topologies=getattr(self, 'topologies', None),
+                                       random=self.random)
+
+        #TODO: check override is working again. It cannot (easily) be part of agents.from_config anymore, 
+        # because it needs attribute such as unique_id, which are only present after init
+        new_agents = [self._read_single_agent(agent) for agent in lst]
+
+
+        for a in new_agents:
+            self.schedule.add(a)
+
+        for rule in override:
+            for agent in agentmod.filter_agents(self.schedule._agents, **rule.filter):
+                for attr, value in rule.state.items():
+                    setattr(agent, attr, value)
 
-    def init_agents(self, agents: [tuple[type, Dict[str, Any]]] = {}):
-        agents = [self.__read_agent_tuple(tup) for tup in agents]
-        self._agents = {'default': {agent.id: agent for agent in agents}}
 
     @property
     def agents(self):
-        return AgentView(self._agents)
+        return agentmod.AgentView(self.schedule._agents)
 
     def find_one(self, *args, **kwargs):
-        return AgentView(self._agents).one(*args, **kwargs)
+        return agentmod.AgentView(self.schedule._agents).one(*args, **kwargs)
     
     def count_agents(self, *args, **kwargs):
         return sum(1 for i in self.agents(*args, **kwargs))
@@ -108,38 +133,12 @@ class BaseEnvironment(Model):
         raise Exception('The environment has not been scheduled, so it has no sense of time')
 
 
-    # def init_agent(self, agent_id, agent_definitions, state=None):
+    def add_agent(self, agent_id, agent_class, **kwargs):
-    #     state = state or {}
-
-    #     agent_class = None
-    #     if 'agent_class' in self.states.get(agent_id, {}):
-    #         agent_class = self.states[agent_id]['agent_class']
-    #     elif 'agent_class' in self.default_state:
-    #         agent_class = self.default_state['agent_class']
-
-    #     if agent_class:
-    #         agent_class = agents.deserialize_type(agent_class)
-    #     elif agent_definitions:
-    #         agent_class, state = agents._agent_from_definition(agent_definitions, unique_id=agent_id)
-    #     else:
-    #         serialization.logger.debug('Skipping agent {}'.format(agent_id))
-    #         return
-    #     return self.add_agent(agent_id, agent_class, state)
-
-
-    def add_agent(self, agent_id, agent_class, state=None, graph='default'):
-        defstate = deepcopy(self.default_state) or {}
-        defstate.update(self.states.get(agent_id, {}))
-        if state:
-            defstate.update(state)
         a = None
         if agent_class:
-            state = defstate
             a = agent_class(model=self,
-                           unique_id=agent_id)
+                            unique_id=agent_id,
-
+                            **kwargs)
-        for (k, v) in state.items():
-            setattr(a, k, v)
 
         self.schedule.add(a)
         return a
@@ -153,7 +152,7 @@ class BaseEnvironment(Model):
             message += " {k}={v} ".format(k, v)
         extra = {}
         extra['now'] = self.now
-        extra['unique_id'] = self.id
+        extra['id'] = self.id
         return self.logger.log(level, message, extra=extra)
 
     def step(self):
@@ -161,6 +160,7 @@ class BaseEnvironment(Model):
         Advance one step in the simulation, and update the data collection and scheduler appropriately
         '''
         super().step()
+        self.logger.info(f'--- Step {self.now:^5} ---')
         self.schedule.step()
         self.datacollector.collect(self)
 
@@ -207,34 +207,41 @@ class BaseEnvironment(Model):
             yield from self._agent_to_tuples(agent, now)
 
 
-class AgentConfigEnvironment(BaseEnvironment):
+class NetworkEnvironment(BaseEnvironment):
 
-    def __init__(self, *args,
+    def __init__(self, *args, topology: nx.Graph = None, topologies: Dict[str, config.NetConfig] = {}, **kwargs):
-                 agents: Dict[str, config.AgentConfig] = {},
+        agents = kwargs.pop('agents', None)
-                 **kwargs):
+        super().__init__(*args, agents=None, **kwargs)
-        return super().__init__(*args, agents=agents, **kwargs)
-
-    def init_agents(self, agents: Union[Dict[str, config.AgentConfig], [tuple[type, Dict[str, Any]]]] = {}):
-        if not isinstance(agents, dict):
-            return BaseEnvironment.init_agents(self, agents)
-
-        self._agents = agents_from_config(agents,
-                                          env=self,
-                                          random=self.random)
-        for d in self._agents.values():
-            for a in d.values():
-                self.schedule.add(a)
-
-
-class NetworkConfigEnvironment(BaseEnvironment):
-
-    def __init__(self, *args, topologies: Dict[str, config.NetConfig] = {}, **kwargs):
-        super().__init__(*args, **kwargs)
-        self.topologies = {}
         self._node_ids = {}
+        assert not hasattr(self, 'topologies')
+        if topology is not None:
+            if topologies:
+                raise ValueError('Please, provide either a single topology or a dictionary of them')
+            topologies = {'default': topology}
+
+        self.topologies = {}
         for (name, cfg) in topologies.items():
             self.set_topology(cfg=cfg, graph=name)
 
+        self.init_agents(agents)
+
+
+    def _read_single_agent(self, agent, unique_id=None):
+        agent = dict(agent)
+
+        if agent.get('topology', None) is not None:
+            topology = agent.get('topology')
+            if unique_id is None:
+                unique_id = self.next_id()
+            if topology:
+                node_id = self.agent_to_node(unique_id, graph_name=topology, node_id=agent.get('node_id'))
+                agent['node_id'] = node_id
+                agent['topology'] = topology
+            agent['unique_id'] = unique_id
+
+        return super()._read_single_agent(agent)
+        
+
     @property
     def topology(self):
         return self.topologies['default']
@@ -246,51 +253,50 @@ class NetworkConfigEnvironment(BaseEnvironment):
 
         self.topologies[graph] = topology
 
-    def topology_for(self, agent_id):
+    def topology_for(self, unique_id):
-        return self.topologies[self._node_ids[agent_id][0]]
+        return self.topologies[self._node_ids[unique_id][0]]
 
     @property
     def network_agents(self):
-        yield from self.agents(agent_class=NetworkAgent)
+        yield from self.agents(agent_class=agentmod.NetworkAgent)
 
-    def agent_to_node(self, agent_id, graph_name='default', node_id=None, shuffle=False):
+    def agent_to_node(self, unique_id, graph_name='default',
-        node_id = network.agent_to_node(G=self.topologies[graph_name], agent_id=agent_id,
+                      node_id=None, shuffle=False):
-                                        node_id=node_id, shuffle=shuffle,
+        node_id = network.agent_to_node(G=self.topologies[graph_name],
+                                        agent_id=unique_id,
+                                        node_id=node_id,
+                                        shuffle=shuffle,
                                         random=self.random)
 
-        self._node_ids[agent_id] = (graph_name, node_id)
+        self._node_ids[unique_id] = (graph_name, node_id)
+        return node_id
 
+    def add_node(self, agent_class, topology, **kwargs):
+        unique_id = self.next_id()
+        self.topologies[topology].add_node(unique_id)
+        node_id = self.agent_to_node(unique_id=unique_id, node_id=unique_id, graph_name=topology)
 
-    def add_node(self, agent_class, state=None, graph='default'):
+        a = self.add_agent(unique_id=unique_id, agent_class=agent_class, node_id=node_id, topology=topology, **kwargs)
-        agent_id = int(len(self.topologies[graph].nodes()))
-        self.topologies[graph].add_node(agent_id)
-        a = self.add_agent(agent_id, agent_class, state, graph=graph)
         a['visible'] = True
         return a
 
     def add_edge(self, agent1, agent2, start=None, graph='default', **attrs):
-        if hasattr(agent1, 'id'):
+        agent1 = agent1.node_id
-            agent1 = agent1.id
+        agent2 = agent2.node_id
-        if hasattr(agent2, 'id'):
+        return self.topologies[graph].add_edge(agent1, agent2, start=start)
-            agent2 = agent2.id
-        start = start or self.now
-        return self.topologies[graph].add_edge(agent1, agent2, **attrs)
 
-    def add_agent(self, *args, state=None, graph='default', **kwargs):
+    def add_agent(self, unique_id, state=None, graph='default', **kwargs):
-        node = self.topologies[graph].nodes[agent_id]
+        node = self.topologies[graph].nodes[unique_id]
         node_state = node.get('state', {})
         if node_state:
             node_state.update(state or {})
             state = node_state
-        a = super().add_agent(*args, state=state, **kwargs)
+        a = super().add_agent(unique_id, state=state, **kwargs)
         node['agent'] = a
         return a
 
     def node_id_for(self, agent_id):
         return self._node_ids[agent_id][1]
 
-class Environment(AgentConfigEnvironment, NetworkConfigEnvironment):
+
-    def __init__(self, *args, **kwargs):
+Environment = NetworkEnvironment
-        agents = kwargs.pop('agents', {})
-        NetworkConfigEnvironment.__init__(self, *args, **kwargs)
-        AgentConfigEnvironment.__init__(self, *args, agents=agents, **kwargs)

soil/exporters.py

@@ -12,7 +12,7 @@ from .serialization import deserialize
 from .utils import open_or_reuse, logger, timer
 
 
-from . import utils
+from . import utils, network
 
 
 class DryRunner(BytesIO):
@@ -85,38 +85,28 @@ class Exporter:
 class default(Exporter):
     '''Default exporter. Writes sqlite results, as well as the simulation YAML'''
 
-    # def sim_start(self):
+    def sim_start(self):
-    #     if not self.dry_run:
+        if not self.dry_run:
-    #         logger.info('Dumping results to %s', self.outdir)
+            logger.info('Dumping results to %s', self.outdir)
-    #         self.simulation.dump_yaml(outdir=self.outdir)
+            with self.output(self.simulation.name + '.dumped.yml') as f:
-    #     else:
+                f.write(self.simulation.to_yaml())
-    #         logger.info('NOT dumping results')
+        else:
+            logger.info('NOT dumping results')
 
-    # def trial_start(self, env, stats):
+    def trial_end(self, env):
-    #     if not self.dry_run:
+        if not self.dry_run:
-    #         with timer('Dumping simulation {} trial {}'.format(self.simulation.name,
+            with timer('Dumping simulation {} trial {}'.format(self.simulation.name,
-    #                                                            env.name)):
+                                                               env.id)):
-    #             engine = create_engine('sqlite:///{}.sqlite'.format(env.name), echo=False)
+                engine = create_engine('sqlite:///{}.sqlite'.format(env.id), echo=False)
 
-    #             dc = env.datacollector
+                dc = env.datacollector
-    #             tables = {'env': dc.get_model_vars_dataframe(),
+                for (t, df) in get_dc_dfs(dc):
-    #                       'agents': dc.get_agent_vars_dataframe(),
+                    df.to_sql(t, con=engine, if_exists='append')
-    #                       'agents': dc.get_agent_vars_dataframe()}
-    #             for table in dc.tables:
-    #                 tables[table] = dc.get_table_dataframe(table)
-    #             for (t, df) in tables.items():
-    #                 df.to_sql(t, con=engine)
-
-    # def sim_end(self, stats):
-    #       with timer('Dumping simulation {}\'s stats'.format(self.simulation.name)):
-    #           engine = create_engine('sqlite:///{}.sqlite'.format(self.simulation.name), echo=False)
-    #           with self.output('{}.sqlite'.format(self.simulation.name), mode='wb') as f:
-    #               self.simulation.dump_sqlite(f)
 
 
 def get_dc_dfs(dc):
     dfs = {'env': dc.get_model_vars_dataframe(),
-        'agents': dc.get_agent_vars_dataframe }
+           'agents': dc.get_agent_vars_dataframe() }
     for table_name in dc.tables:
         dfs[table_name] = dc.get_table_dataframe(table_name)
     yield from dfs.items() 
@@ -130,10 +120,11 @@ class csv(Exporter):
                                                                           env.id,
                                                                           self.outdir)):
             for (df_name, df) in get_dc_dfs(env.datacollector):
-                with self.output('{}.stats.{}.csv'.format(env.id, df_name)) as f:
+                with self.output('{}.{}.csv'.format(env.id, df_name)) as f:
                     df.to_csv(f)
 
 
+#TODO: reimplement GEXF exporting without history
 class gexf(Exporter):
     def trial_end(self, env):
         if self.dry_run:
@@ -143,18 +134,9 @@ class gexf(Exporter):
         with timer('[GEXF] Dumping simulation {} trial {}'.format(self.simulation.name,
                                                                   env.id)):
             with self.output('{}.gexf'.format(env.id), mode='wb') as f:
+                network.dump_gexf(env.history_to_graph(), f)
                 self.dump_gexf(env, f)
 
-    def dump_gexf(self, env, f):
-        G = env.history_to_graph()
-        # Workaround for geometric models
-        # See soil/soil#4
-        for node in G.nodes():
-            if 'pos' in G.nodes[node]:
-                G.nodes[node]['viz'] = {"position": {"x": G.nodes[node]['pos'][0], "y": G.nodes[node]['pos'][1], "z": 0.0}}
-                del (G.nodes[node]['pos'])
-
-        nx.write_gexf(G, f, version="1.2draft")
 
 class dummy(Exporter):
 

soil/network.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Dict
 import os
 import sys
@@ -37,8 +39,10 @@ def from_config(cfg: config.NetConfig, dir_path: str = None):
                                             known_modules=['networkx.generators',])
         return method(**net_args)
 
-    if isinstance(cfg.topology, basestring) or isinstance(cfg.topology, dict):
+    if isinstance(cfg.topology, config.Topology):
-        return nx.json_graph.node_link_graph(cfg.topology)
+        cfg = cfg.topology.dict()
+    if isinstance(cfg, str) or isinstance(cfg, dict):
+        return nx.json_graph.node_link_graph(cfg)
 
     return nx.Graph()
 
@@ -57,9 +61,18 @@ def agent_to_node(G, agent_id, node_id=None, shuffle=False, random=random):
         for next_id, data in candidates:
             if data.get('agent_id', None) is None:
                 node_id = next_id
-                data['agent_id'] = agent_id
                 break
 
     if node_id is None:
         raise ValueError(f"Not enough nodes in topology to assign one to agent {agent_id}")
+    G.nodes[node_id]['agent_id'] = agent_id
     return node_id
+
+
+def dump_gexf(G, f):
+    for node in G.nodes():
+        if 'pos' in G.nodes[node]:
+            G.nodes[node]['viz'] = {"position": {"x": G.nodes[node]['pos'][0], "y": G.nodes[node]['pos'][1], "z": 0.0}}
+            del (G.nodes[node]['pos'])
+
+    nx.write_gexf(G, f, version="1.2draft")

soil/serialization.py

@@ -7,6 +7,8 @@ import importlib
 from glob import glob
 from itertools import product, chain
 
+from .config import Config
+
 import yaml
 import networkx as nx
 
@@ -120,22 +122,25 @@ def params_for_template(config):
 def load_files(*patterns, **kwargs):
     for pattern in patterns:
         for i in glob(pattern, **kwargs):
-            for config in load_file(i):
+            for cfg in load_file(i):
                 path = os.path.abspath(i)
-                yield config, path
+                yield Config.from_raw(cfg), path
 
 
-def load_config(config):
+def load_config(cfg):
-    if isinstance(config, dict):
+    if isinstance(cfg, Config):
-        yield config, os.getcwd()
+        yield cfg, os.getcwd()
+    elif isinstance(cfg, dict):
+        yield Config.from_raw(cfg), os.getcwd()
     else:
-        yield from load_files(config)
+        yield from load_files(cfg)
 
 
 builtins = importlib.import_module('builtins')
 
 KNOWN_MODULES = ['soil', ]
 
+
 def name(value, known_modules=KNOWN_MODULES):
     '''Return a name that can be imported, to serialize/deserialize an object'''
     if value is None:
@@ -172,8 +177,22 @@ def serialize(v, known_modules=KNOWN_MODULES):
     return func(v), tname
 
 
+def serialize_dict(d, known_modules=KNOWN_MODULES):
+    d = dict(d)
+    for (k, v) in d.items():
+        if isinstance(v, dict):
+            d[k] = serialize_dict(v, known_modules=known_modules)
+        elif isinstance(v, list):
+            for ix in range(len(v)):
+                v[ix] = serialize_dict(v[ix], known_modules=known_modules)
+        elif isinstance(v, type):
+            d[k] = serialize(v, known_modules=known_modules)[1]
+    return d
+
+
 IS_CLASS = re.compile(r"<class '(.*)'>")
 
+
 def deserializer(type_, known_modules=KNOWN_MODULES):
     if type(type_) != str:  # Already deserialized
         return type_

soil/simulation.py

@@ -4,15 +4,17 @@ import importlib
 import sys
 import yaml
 import traceback
+import inspect
 import logging
 import networkx as nx
 
+from textwrap import dedent
+
 from dataclasses import dataclass, field, asdict
-from typing import Union
+from typing import Any, Dict, Union, Optional
 
 
 from networkx.readwrite import json_graph
-from multiprocessing import Pool
 from functools import partial
 import pickle
 
@@ -21,7 +23,6 @@ from .environment import Environment
 from .utils import logger, run_and_return_exceptions
 from .exporters import default
 from .time import INFINITY
-
 from .config import Config, convert_old
 
 
@@ -36,7 +37,9 @@ class Simulation:
 
     kwargs: parameters to use to initialize a new configuration, if one has not been provided.
     """
+    version: str = '2'
     name: str = 'Unnamed simulation'
+    description: Optional[str] = ''
     group: str = None
     model_class: Union[str, type] = 'soil.Environment'
     model_params: dict = field(default_factory=dict)
@@ -44,30 +47,37 @@ class Simulation:
     dir_path: str = field(default_factory=lambda: os.getcwd())
     max_time: float = float('inf')
     max_steps: int = -1
+    interval: int = 1
     num_trials: int = 3
     dry_run: bool = False
+    extra: Dict[str, Any] = field(default_factory=dict)
+
+    @classmethod
+    def from_dict(cls, env):      
+
+        ignored = {k: v for k, v in env.items() 
+                   if k not in inspect.signature(cls).parameters}
+
+        kwargs = {k:v for k, v in env.items() if k not in ignored}
+        if ignored:
+            kwargs.setdefault('extra', {}).update(ignored)
+        if ignored:
+            print(f'Warning: Ignoring these parameters (added to "extra"): { ignored }')
+
+        return cls(**kwargs)
 
     def run_simulation(self, *args, **kwargs):
         return self.run(*args, **kwargs)
 
     def run(self, *args, **kwargs):
         '''Run the simulation and return the list of resulting environments'''
+        logger.info(dedent('''
+        Simulation:
+        ---
+        ''') +
+        self.to_yaml())
         return list(self.run_gen(*args, **kwargs))
 
-    def _run_sync_or_async(self, parallel=False, **kwargs):
-        if parallel and not os.environ.get('SENPY_DEBUG', None):
-            p = Pool()
-            func = partial(run_and_return_exceptions, self.run_trial, **kwargs)
-            for i in p.imap_unordered(func, self.num_trials):
-                if isinstance(i, Exception):
-                    logger.error('Trial failed:\n\t%s', i.message)
-                    continue
-                yield i
-        else:
-            for i in range(self.num_trials):
-                yield self.run_trial(trial_id=i,
-                                     **kwargs)
-
     def run_gen(self, parallel=False, dry_run=False,
                 exporters=[default, ], outdir=None, exporter_params={},
                 log_level=None,
@@ -88,7 +98,9 @@ class Simulation:
             for exporter in exporters:
                 exporter.sim_start()
 
-            for env in self._run_sync_or_async(parallel=parallel,
+            for env in utils.run_parallel(func=self.run_trial,
+                                          iterable=range(int(self.num_trials)),
+                                          parallel=parallel,
                                           log_level=log_level,
                                           **kwargs):
 
@@ -103,14 +115,6 @@ class Simulation:
             for exporter in exporters:
                 exporter.sim_end()
 
-    def run_model(self, until=None, *args, **kwargs):
-        until = until or float('inf')
-
-        while self.schedule.next_time < until:
-            self.step()
-            utils.logger.debug(f'Simulation step {self.schedule.time}/{until}. Next: {self.schedule.next_time}')
-        self.schedule.time = until
-
     def get_env(self, trial_id=0, **kwargs):
         '''Create an environment for a trial of the simulation'''
         def deserialize_reporters(reporters):
@@ -132,29 +136,50 @@ class Simulation:
                    model_reporters=model_reporters,
                    **model_params)
 
-    def run_trial(self, trial_id=None, until=None, log_level=logging.INFO, **opts):
+    def run_trial(self, trial_id=None, until=None, log_file=False, log_level=logging.INFO, **opts):
         """
         Run a single trial of the simulation
 
         """
-        model = self.get_env(trial_id, **opts)
-        return self.run_model(model, trial_id=trial_id, until=until, log_level=log_level)
-
-    def run_model(self, model, trial_id=None, until=None, log_level=logging.INFO, **opts):
-        trial_id = trial_id if trial_id is not None else current_time()
         if log_level:
             logger.setLevel(log_level)
+        model = self.get_env(trial_id, **opts)
+        trial_id = trial_id if trial_id is not None else current_time()
+        with utils.timer('Simulation {} trial {}'.format(self.name, trial_id)):
+            return self.run_model(model=model, trial_id=trial_id, until=until, log_level=log_level)
+
+    def run_model(self, model, until=None, **opts):
         # Set-up trial environment and graph
-        until = until or self.max_time
+        until = float(until or self.max_time or 'inf')
 
         # Set up agents on nodes
-        is_done = lambda: False
+        def is_done():
-        if self.max_time and hasattr(self.schedule, 'time'):
+            return False
-            is_done = lambda x: is_done() or self.schedule.time >= self.max_time
+
-        if self.max_steps and hasattr(self.schedule, 'time'):
+        if until and hasattr(model.schedule, 'time'):
-            is_done = lambda: is_done() or self.schedule.steps >= self.max_steps
+            prev = is_done
+
+            def is_done():
+                return prev() or model.schedule.time >= until
+
+        if self.max_steps and self.max_steps > 0 and hasattr(model.schedule, 'steps'):
+            prev_steps = is_done
+
+            def is_done():
+                return prev_steps() or model.schedule.steps >= self.max_steps
+
+        newline = '\n'
+        logger.info(dedent(f'''
+Model stats:
+  Agents (total: { model.schedule.get_agent_count() }):
+      - { (newline + '      - ').join(str(a) for a in model.schedule.agents) }'''
+f'''
+
+  Topologies (size):
+      -  { dict( (k, len(v)) for (k, v) in model.topologies.items())  }
+''' if getattr(model, "topologies", None) else ''
+))
 
-        with utils.timer('Simulation {} trial {}'.format(self.name, trial_id)):
         while not is_done():
             utils.logger.debug(f'Simulation time {model.schedule.time}/{until}. Next: {getattr(model.schedule, "next_time", model.schedule.time + self.interval)}')
             model.step()
@@ -162,26 +187,25 @@ class Simulation:
 
     def to_dict(self):
         d = asdict(self)
-        d['model_class'] = serialization.serialize(d['model_class'])[0]
+        if not isinstance(d['model_class'], str):
-        d['model_params'] = serialization.serialize(d['model_params'])[0]
+            d['model_class'] = serialization.name(d['model_class'])
+        d['model_params'] = serialization.serialize_dict(d['model_params'])
         d['dir_path'] = str(d['dir_path'])
-
+        d['version'] = '2'
         return d
 
     def to_yaml(self):
-        return yaml.dump(self.asdict())
+        return yaml.dump(self.to_dict())
 
 
-def iter_from_config(config):
+def iter_from_config(*cfgs):
+    for config in cfgs:
         configs = list(serialization.load_config(config))
         for config, path in configs:
             d = dict(config)
             if 'dir_path' not in d:
                 d['dir_path'] = os.path.dirname(path)
-        if d.get('version', '2') == '1' or 'agents' in d or 'network_agents' in d or 'environment_agents' in d:
+            yield Simulation.from_dict(d)
-            d = convert_old(d)
-        d.pop('version', None)
-        yield Simulation(**d)
 
 
 def from_config(conf_or_path):
@@ -192,6 +216,6 @@ def from_config(conf_or_path):
 
 
 def run_from_config(*configs, **kwargs):
-    for sim in iter_from_config(configs):
+    for sim in iter_from_config(*configs):
-        logger.info(f"Using config(s): {sim.id}")
+        logger.info(f"Using config(s): {sim.name}")
         sim.run_simulation(**kwargs)

soil/time.py

@@ -1,6 +1,6 @@
 from mesa.time import BaseScheduler
 from queue import Empty
-from heapq import heappush, heappop
+from heapq import heappush, heappop, heapify
 import math
 from .utils import logger
 from mesa import Agent as MesaAgent
@@ -17,6 +17,7 @@ class When:
     def abs(self, time):
         return self._time
 
+
 NEVER = When(INFINITY)
 
 
@@ -38,13 +39,21 @@ class TimedActivation(BaseScheduler):
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
+        self._next = {}
         self._queue = []
         self.next_time = 0
         self.logger = logger.getChild(f'time_{ self.model }')
 
-    def add(self, agent: MesaAgent):
+    def add(self, agent: MesaAgent, when=None):
-        if agent.unique_id not in self._agents:
+        if when is None:
-            heappush(self._queue, (self.time, agent.unique_id))
+            when = self.time
+        if agent.unique_id in self._agents:
+            self._queue.remove((self._next[agent.unique_id], agent.unique_id))
+            del self._agents[agent.unique_id]
+            heapify(self._queue)
+        
+        heappush(self._queue, (when, agent.unique_id))
+        self._next[agent.unique_id] = when
         super().add(agent)
 
     def step(self) -> None:
@@ -64,11 +73,18 @@ class TimedActivation(BaseScheduler):
             (when, agent_id) = heappop(self._queue)
             self.logger.debug(f'Stepping agent {agent_id}')
 
-            returned = self._agents[agent_id].step()
+            agent = self._agents[agent_id]
+            returned = agent.step()
+
+            if not agent.alive:
+                self.remove(agent)
+                continue
+
             when = (returned or Delta(1)).abs(self.time)
             if when < self.time:
                 raise Exception("Cannot schedule an agent for a time in the past ({} < {})".format(when, self.time))
 
+            self._next[agent_id] = when
             heappush(self._queue, (when, agent_id))
 
         self.steps += 1
@@ -77,7 +93,7 @@ class TimedActivation(BaseScheduler):
             self.time = INFINITY
             self.next_time = INFINITY
             self.model.running = False
-            return
+            return self.time
 
         self.next_time = self._queue[0][0]
         self.logger.debug(f'Next step: {self.next_time}')

soil/utils.py

@@ -3,13 +3,27 @@ from time import time as current_time, strftime, gmtime, localtime
 import os
 import traceback
 
+from functools import partial
 from shutil import copyfile
+from multiprocessing import Pool
 
 from contextlib import contextmanager
 
 logger = logging.getLogger('soil')
-# logging.basicConfig()
+logger.setLevel(logging.INFO)
-# logger.setLevel(logging.INFO)
+
+timeformat = "%H:%M:%S"
+
+if os.environ.get('SOIL_VERBOSE', ''):
+    logformat = "[%(levelname)-5.5s][%(asctime)s][%(name)s]:  %(message)s"
+else:
+    logformat = "[%(levelname)-5.5s][%(asctime)s] %(message)s"
+
+logFormatter = logging.Formatter(logformat, timeformat)
+
+consoleHandler = logging.StreamHandler()
+consoleHandler.setFormatter(logFormatter)
+logger.addHandler(consoleHandler)
 
 
 @contextmanager
@@ -27,8 +41,6 @@ def timer(name='task', pre="", function=logger.info, to_object=None):
         to_object.end = end
 
 
-
-
 def safe_open(path, mode='r', backup=True, **kwargs):
     outdir = os.path.dirname(path)
     if outdir and not os.path.exists(outdir):
@@ -92,7 +104,7 @@ def unflatten_dict(d):
     return out
 
 
-def run_and_return_exceptions(self, func, *args, **kwargs):
+def run_and_return_exceptions(func, *args, **kwargs):
     '''
     A wrapper for run_trial that catches exceptions and returns them.
     It is meant for async simulations.
@@ -104,3 +116,18 @@ def run_and_return_exceptions(self, func, *args, **kwargs):
             ex = ex.__cause__
         ex.message = ''.join(traceback.format_exception(type(ex), ex, ex.__traceback__)[:])
         return ex
+
+
+def run_parallel(func, iterable, parallel=False, **kwargs):
+    if parallel and not os.environ.get('SOIL_DEBUG', None):
+        p = Pool()
+        wrapped_func = partial(run_and_return_exceptions,
+                               func, **kwargs)
+        for i in p.imap_unordered(wrapped_func, iterable):
+            if isinstance(i, Exception):
+                logger.error('Trial failed:\n\t%s', i.message)
+                continue
+            yield i
+    else:
+        for i in iterable:
+            yield func(i, **kwargs)

tests/complete_converted.yml

@@ -1,49 +1,50 @@
 ---
 version: '2'
-general:
+name: simple
-  id: simple
+group: tests
-  group: tests
+dir_path: "/tmp/"
-  dir_path: "/tmp/"
+num_trials: 3
-  num_trials: 3
+max_time: 100
-  max_time: 100
+interval: 1
-  interval: 1
+seed: "CompleteSeed!"
-  seed: "CompleteSeed!"
+model_class: Environment
-topologies:
+model_params:
+  topologies:
     default:
       params:
         generator: complete_graph
-      n: 10
+        n: 4
-agents:
+  agents:
-  default:
     agent_class: CounterModel
     state:
+      group: network
       times: 1
-  network:
     topology: 'default'
     distribution:
       - agent_class: CounterModel
-        weight: 0.4
+        weight: 0.25
         state:
           state_id: 0
+          times: 1
       - agent_class: AggregatedCounter
-        weight: 0.6
+        weight: 0.5
-    override:
-      - filter:
-          node_id: 0
         state:
-          name: 'The first node'
+          times: 2
+    override:
       - filter:
           node_id: 1
         state:
-          name: 'The second node'
+          name: 'Node 1'
-
+      - filter:
-  environment:
+          node_id: 2
-    fixed:
-      - name: 'Environment Agent 1'
-        agent_class: CounterModel
         state:
+          name: 'Node 2'
+    fixed:
+      - agent_class: BaseAgent
+        hidden: true
+        topology: null
+        state:
+          name: 'Environment Agent 1'
           times: 10
-environment:
+          group: environment
-  environment_class: Environment
-  params:
   am_i_complete: true

tests/old_complete.yml

@@ -8,17 +8,20 @@ interval: 1
 seed: "CompleteSeed!"
 network_params:
   generator: complete_graph
-  n: 10
+  n: 4
 network_agents:
   - agent_class: CounterModel
-    weight: 0.4
+    weight: 0.25
     state:
       state_id: 0
+      times: 1
   - agent_class: AggregatedCounter
-    weight: 0.6
+    weight: 0.5
+    state:
+      times: 2
 environment_agents:
   - agent_id: 'Environment Agent 1'
-    agent_class: CounterModel
+    agent_class: BaseAgent
     state:
       times: 10
 environment_class: Environment
@@ -28,5 +31,7 @@ agent_class: CounterModel
 default_state:
   times: 1
 states:
-  - name: 'The first node'
+  1:
-  - name: 'The second node'
+    name: 'Node 1'
+  2:
+    name: 'Node 2'

tests/test_agents.py

@@ -8,7 +8,7 @@ class Dead(agents.FSM):
     @agents.default_state
     @agents.state
     def only(self):
-        self.die()
+        return self.die()
 
 class TestMain(TestCase):
     def test_die_raises_exception(self):
@@ -19,4 +19,6 @@ class TestMain(TestCase):
 
     def test_die_returns_infinity(self):
         d = Dead(unique_id=0, model=environment.Environment())
-        assert d.step().abs(0) == stime.INFINITY
+        ret = d.step().abs(0)
+        print(ret, 'next')
+        assert ret == stime.INFINITY

tests/test_analysis.py

@@ -1,91 +0,0 @@
-from unittest import TestCase
-
-import os
-import pandas as pd
-import yaml
-from functools import partial
-
-from os.path import join
-from soil import simulation, analysis, agents
-
-
-ROOT = os.path.abspath(os.path.dirname(__file__))
-
-
-class Ping(agents.FSM):
-
-    defaults = {
-        'count': 0,
-    }
-
-    @agents.default_state
-    @agents.state
-    def even(self):
-        self.debug(f'Even {self["count"]}')
-        self['count'] += 1
-        return self.odd
-
-    @agents.state
-    def odd(self):
-        self.debug(f'Odd {self["count"]}')
-        self['count'] += 1
-        return self.even
-
-
-class TestAnalysis(TestCase):
-
-    # Code to generate a simple sqlite history
-    def setUp(self):
-        """
-        The initial states should be applied to the agent and the
-        agent should be able to update its state."""
-        config = {
-            'name': 'analysis',
-            'seed': 'seed',
-            'network_params': {
-                'generator': 'complete_graph',
-                'n': 2
-            },
-            'agent_class': Ping,
-            'states': [{'interval': 1}, {'interval': 2}],
-            'max_time': 30,
-            'num_trials': 1,
-            'history': True,
-            'environment_params': {
-            }
-        }
-        s = simulation.from_config(config)
-        self.env = s.run_simulation(dry_run=True)[0]
-
-    def test_saved(self):
-        env = self.env
-        assert env.get_agent(0)['count', 0] == 1
-        assert env.get_agent(0)['count', 29] == 30
-        assert env.get_agent(1)['count', 0] == 1
-        assert env.get_agent(1)['count', 29] == 15
-        assert env['env', 29, None]['SEED'] == env['env', 29, 'SEED']
-
-    def test_count(self):
-        env = self.env
-        df = analysis.read_sql(env._history.db_path)
-        res = analysis.get_count(df, 'SEED', 'state_id')
-        assert res['SEED'][self.env['SEED']].iloc[0] == 1
-        assert res['SEED'][self.env['SEED']].iloc[-1] == 1
-        assert res['state_id']['odd'].iloc[0] == 2
-        assert res['state_id']['even'].iloc[0] == 0
-        assert res['state_id']['odd'].iloc[-1] == 1
-        assert res['state_id']['even'].iloc[-1] == 1
-
-    def test_value(self):
-        env = self.env
-        df = analysis.read_sql(env._history.db_path)
-        res_sum = analysis.get_value(df, 'count')
-
-        assert res_sum['count'].iloc[0] == 2
-
-        import numpy as np
-        res_mean = analysis.get_value(df, 'count', aggfunc=np.mean)
-        assert res_mean['count'].iloc[15] == (16+8)/2
-
-        res_total = analysis.get_majority(df)
-        res_total['SEED'].iloc[0] == self.env['SEED']

tests/test_config.py

@@ -29,7 +29,7 @@ class TestConfig(TestCase):
         expected = serialization.load_file(join(ROOT, "complete_converted.yml"))[0]
         old = serialization.load_file(join(ROOT, "old_complete.yml"))[0]
         converted_defaults = config.convert_old(old, strict=False)
-        converted = converted_defaults.dict(skip_defaults=True)
+        converted = converted_defaults.dict(exclude_unset=True)
 
         isequal(converted, expected)
 
@@ -40,10 +40,10 @@ class TestConfig(TestCase):
         """
         config = serialization.load_file(join(EXAMPLES, 'complete.yml'))[0]
         s = simulation.from_config(config)
-        init_config = copy.copy(s.config)
+        init_config = copy.copy(s.to_dict())
 
         s.run_simulation(dry_run=True)
-        nconfig = s.config
+        nconfig = s.to_dict()
         # del nconfig['to
         isequal(init_config, nconfig)
 
@@ -61,7 +61,7 @@ class TestConfig(TestCase):
         Simple configuration that tests that the graph is loaded, and that
         network agents are initialized properly.
         """
-        config = {
+        cfg = {
             'name': 'CounterAgent',
             'network_params': {
                 'path': join(ROOT, 'test.gexf')
@@ -74,12 +74,14 @@ class TestConfig(TestCase):
             'environment_params': {
             }
         }
-        s = simulation.from_old_config(config)
+        conf = config.convert_old(cfg)
+        s = simulation.from_config(conf)
+
         env = s.get_env()
         assert len(env.topologies['default'].nodes) == 2
         assert len(env.topologies['default'].edges) == 1
         assert len(env.agents) == 2
-        assert env.agents[0].topology == env.topologies['default']
+        assert env.agents[0].G == env.topologies['default']
 
     def test_agents_from_config(self):
         '''We test that the known complete configuration produces
@@ -87,13 +89,10 @@ class TestConfig(TestCase):
         cfg = serialization.load_file(join(ROOT, "complete_converted.yml"))[0]
         s = simulation.from_config(cfg)
         env = s.get_env()
-        assert len(env.topologies['default'].nodes) == 10
+        assert len(env.topologies['default'].nodes) == 4
-        assert len(env.agents(group='network')) == 10
+        assert len(env.agents(group='network')) == 4
         assert len(env.agents(group='environment')) == 1
 
-        assert sum(1 for a in env.agents(group='network', agent_class=agents.CounterModel)) == 4
-        assert sum(1 for a in env.agents(group='network', agent_class=agents.AggregatedCounter)) == 6
-
     def test_yaml(self):
         """
         The YAML version of a newly created configuration should be equivalent

tests/test_examples.py

@@ -2,7 +2,7 @@ from unittest import TestCase
 import os
 from os.path import join
 
-from soil import serialization, simulation
+from soil import serialization, simulation, config
 
 ROOT = os.path.abspath(os.path.dirname(__file__))
 EXAMPLES = join(ROOT, '..', 'examples')
@@ -14,36 +14,37 @@ class TestExamples(TestCase):
     pass
 
 
-def make_example_test(path, config):
+def make_example_test(path, cfg):
     def wrapped(self):
         root = os.getcwd()
-        for s in simulation.all_from_config(path):
+        for s in simulation.iter_from_config(cfg):
-            iterations = s.config.general.max_time * s.config.general.num_trials
+            iterations = s.max_steps * s.num_trials
-            if iterations > 1000:
+            if iterations < 0 or iterations > 1000:
-                s.config.general.max_time = 100
+                s.max_steps = 100
-                s.config.general.num_trials = 1
+                s.num_trials = 1
-            if config.get('skip_test', False) and not FORCE_TESTS:
+            assert isinstance(cfg, config.Config)
+            if getattr(cfg, 'skip_test', False) and not FORCE_TESTS:
                 self.skipTest('Example ignored.')
             envs = s.run_simulation(dry_run=True)
             assert envs
             for env in envs:
                 assert env
                 try:
-                    n = config['network_params']['n']
+                    n = cfg.model_params['network_params']['n']
                     assert len(list(env.network_agents)) == n
-                    assert env.now > 0  # It has run
-                    assert env.now <= config['max_time']  # But not further than allowed
                 except KeyError:
                     pass
+                assert env.schedule.steps > 0  # It has run
+                assert env.schedule.steps <= s.max_steps  # But not further than allowed
     return wrapped
 
 
 def add_example_tests():
-    for config, path in serialization.load_files(
+    for cfg, path in serialization.load_files(
             join(EXAMPLES, '*', '*.yml'),
             join(EXAMPLES, '*.yml'),
     ):
-        p = make_example_test(path=path, config=config)
+        p = make_example_test(path=path, cfg=config.Config.from_raw(cfg))
         fname = os.path.basename(path)
         p.__name__ = 'test_example_file_%s' % fname
         p.__doc__ = '%s should be a valid configuration' % fname

tests/test_exporters.py

@@ -6,6 +6,8 @@ import shutil
 from unittest import TestCase
 from soil import exporters
 from soil import simulation
+from soil import agents
+
 
 class Dummy(exporters.Exporter):
     started = False
@@ -33,28 +35,36 @@ class Dummy(exporters.Exporter):
 
 class Exporters(TestCase):
     def test_basic(self):
+        # We need to add at least one agent to make sure the scheduler
+        # ticks every step
+        num_trials = 5
+        max_time = 2
         config = {
             'name': 'exporter_sim',
-            'network_params': {},
+            'model_params': {
-            'agent_class': 'CounterModel',
+                'agents': [{
-            'max_time': 2,
+                    'agent_class': agents.BaseAgent
-            'num_trials': 5,
+                }]
-            'environment_params': {}
+            },
+            'max_time': max_time,
+            'num_trials': num_trials,
         }
         s = simulation.from_config(config)
+
         for env in s.run_simulation(exporters=[Dummy], dry_run=True):
-            assert env.now <= 2
+            assert len(env.agents) == 1
+            assert env.now == max_time
 
         assert Dummy.started
         assert Dummy.ended
         assert Dummy.called_start == 1
         assert Dummy.called_end == 1
-        assert Dummy.called_trial == 5
+        assert Dummy.called_trial == num_trials
-        assert Dummy.trials == 5
+        assert Dummy.trials == num_trials
-        assert Dummy.total_time == 2*5
+        assert Dummy.total_time == max_time * num_trials
 
     def test_writing(self):
-        '''Try to write CSV, GEXF, sqlite and YAML (without dry_run)'''
+        '''Try to write CSV, sqlite and YAML (without dry_run)'''
         n_trials = 5
         config = {
             'name': 'exporter_sim',
@@ -74,7 +84,6 @@ class Exporters(TestCase):
         envs = s.run_simulation(exporters=[
                                     exporters.default,
                                     exporters.csv,
-                                    exporters.gexf,
                                 ],
                                 dry_run=False,
                                 outdir=tmpdir,
@@ -88,11 +97,7 @@ class Exporters(TestCase):
 
         try:
             for e in envs:
-                with open(os.path.join(simdir, '{}.gexf'.format(e.name))) as f:
+                with open(os.path.join(simdir, '{}.env.csv'.format(e.id))) as f:
-                    result = f.read()
-                    assert result
-
-                with open(os.path.join(simdir, '{}.csv'.format(e.name))) as f:
                     result = f.read()
                     assert result
         finally:

tests/test_history.py

@@ -1,128 +0,0 @@
-from unittest import TestCase
-
-import os
-import io
-import yaml
-import copy
-import pickle
-import networkx as nx
-from functools import partial
-
-from os.path import join
-from soil import (simulation, Environment, agents, serialization,
-                  utils)
-from soil.time import Delta
-from tsih import NoHistory, History
-
-
-ROOT = os.path.abspath(os.path.dirname(__file__))
-EXAMPLES = join(ROOT, '..', 'examples')
-
-
-class CustomAgent(agents.FSM):
-    @agents.default_state
-    @agents.state
-    def normal(self):
-        self.neighbors = self.count_agents(state_id='normal',
-                                           limit_neighbors=True)
-    @agents.state
-    def unreachable(self):
-        return
-
-class TestHistory(TestCase):
-
-    def test_counter_agent_history(self):
-        """
-        The evolution of the state should be recorded in the logging agent
-        """
-        config = {
-            'name': 'CounterAgent',
-            'network_params': {
-                'path': join(ROOT, 'test.gexf')
-            },
-            'network_agents': [{
-                'agent_class': 'AggregatedCounter',
-                'weight': 1,
-                'state': {'state_id': 0}
-
-            }],
-            'max_time': 10,
-            'environment_params': {
-            }
-        }
-        s = simulation.from_config(config)
-        env = s.run_simulation(dry_run=True)[0]
-        for agent in env.network_agents:
-            last = 0
-            assert len(agent[None, None]) == 11
-            for step, total in sorted(agent['total', None]):
-                assert total == last + 2
-                last = total
-
-    def test_row_conversion(self):
-        env = Environment(history=True)
-        env['test'] = 'test_value'
-
-        res = list(env.history_to_tuples())
-        assert len(res) == len(env.environment_params)
-
-        env.schedule.time = 1
-        env['test'] = 'second_value'
-        res = list(env.history_to_tuples())
-
-        assert env['env', 0, 'test' ] == 'test_value'
-        assert env['env', 1, 'test' ] == 'second_value'
-
-    def test_nohistory(self):
-        '''
-        Make sure that no history(/sqlite) is used by default
-        '''
-        env = Environment(topology=nx.Graph(), network_agents=[])
-        assert isinstance(env._history, NoHistory)
-
-    def test_save_graph_history(self):
-        '''
-        The history_to_graph method should return a valid networkx graph.
-
-        The state of the agent should be encoded as intervals in the nx graph.
-        '''
-        G = nx.cycle_graph(5)
-        distribution = agents.calculate_distribution(None, agents.BaseAgent)
-        env = Environment(topology=G, network_agents=distribution, history=True)
-        env[0, 0, 'testvalue'] = 'start'
-        env[0, 10, 'testvalue'] = 'finish'
-        nG = env.history_to_graph()
-        values = nG.nodes[0]['attr_testvalue']
-        assert ('start', 0, 10) in values
-        assert ('finish', 10, None) in values
-
-    def test_save_graph_nohistory(self):
-        '''
-        The history_to_graph method should return a valid networkx graph.
-
-        When NoHistory is used, only the last known value is known
-        '''
-        G = nx.cycle_graph(5)
-        distribution = agents.calculate_distribution(None, agents.BaseAgent)
-        env = Environment(topology=G, network_agents=distribution, history=False)
-        env.get_agent(0)['testvalue'] = 'start'
-        env.schedule.time = 10
-        env.get_agent(0)['testvalue'] = 'finish'
-        nG = env.history_to_graph()
-        values = nG.nodes[0]['attr_testvalue']
-        assert ('start', 0, None) not in values
-        assert ('finish', 10, None) in values
-
-    def test_pickle_agent_environment(self):
-        env = Environment(name='Test', history=True)
-        a = agents.BaseAgent(model=env, unique_id=25)
-
-        a['key'] = 'test'
-
-        pickled = pickle.dumps(a)
-        recovered = pickle.loads(pickled)
-
-        assert recovered.env.name == 'Test'
-        assert list(recovered.env._history.to_tuples())
-        assert recovered['key', 0] == 'test'
-        assert recovered['key'] == 'test'

tests/test_main.py

@@ -24,6 +24,7 @@ class CustomAgent(agents.FSM, agents.NetworkAgent):
     def unreachable(self):
         return
 
+
 class TestMain(TestCase):
 
     def test_empty_simulation(self):
@@ -79,20 +80,16 @@ class TestMain(TestCase):
                     }
                 },
                 'agents': {
-                    'default': {
                     'agent_class': 'CounterModel',
-                    },
-                    'counters': {
                     'topology': 'default',
                     'fixed': [{'state': {'times': 10}}, {'state': {'times': 20}}],
                 }
             }
         }
-        }
         s = simulation.from_config(config)
         env = s.get_env()
         assert isinstance(env.agents[0], agents.CounterModel)
-        assert env.agents[0].topology == env.topologies['default']
+        assert env.agents[0].G == env.topologies['default']
         assert env.agents[0]['times'] == 10
         assert env.agents[0]['times'] == 10
         env.step()
@@ -105,8 +102,8 @@ class TestMain(TestCase):
         config = {
             'max_time': 10,
             'model_params': {
-                'agents': [(CustomAgent, {'weight': 1}),
+                'agents': [{'agent_class': CustomAgent, 'weight': 1, 'topology': 'default'},
-                           (CustomAgent, {'weight': 3}),
+                           {'agent_class': CustomAgent, 'weight': 3, 'topology': 'default'},
                 ],
                 'topologies': {
                     'default': {
@@ -128,7 +125,7 @@ class TestMain(TestCase):
         """A complete example from a documentation should work."""
         config = serialization.load_file(join(EXAMPLES, 'torvalds.yml'))[0]
         config['model_params']['network_params']['path'] = join(EXAMPLES,
-                                                config['network_params']['path'])
+                                                config['model_params']['network_params']['path'])
         s = simulation.from_config(config)
         env = s.run_simulation(dry_run=True)[0]
         for a in env.network_agents:
@@ -208,24 +205,6 @@ class TestMain(TestCase):
         assert converted[1]['agent_class'] == 'test_main.CustomAgent'
         pickle.dumps(converted)
 
-    def test_subgraph(self):
-        '''An agent should be able to subgraph the global topology'''
-        G = nx.Graph()
-        G.add_node(3)
-        G.add_edge(1, 2)
-        distro = agents.calculate_distribution(agent_class=agents.NetworkAgent)
-        distro[0]['topology'] = 'default'
-        aconfig = config.AgentConfig(distribution=distro, topology='default')
-        env = Environment(name='Test', topologies={'default': G}, agents={'network': aconfig})
-        lst = list(env.network_agents)
-
-        a2 = env.find_one(node_id=2)
-        a3 = env.find_one(node_id=3)
-        assert len(a2.subgraph(limit_neighbors=True)) == 2
-        assert len(a3.subgraph(limit_neighbors=True)) == 1
-        assert len(a3.subgraph(limit_neighbors=True, center=False)) == 0
-        assert len(a3.subgraph(agent_class=agents.NetworkAgent)) == 3
-
     def test_templates(self):
         '''Loading a template should result in several configs'''
         configs = serialization.load_file(join(EXAMPLES, 'template.yml'))
@@ -236,14 +215,18 @@ class TestMain(TestCase):
             'name': 'until_sim',
             'model_params': {
                 'network_params': {},
-                'agent_class': 'CounterModel',
+                'agents': {
+                    'fixed': [{
+                        'agent_class': agents.BaseAgent,
+                    }]
+                },
             },
             'max_time': 2,
             'num_trials': 50,
         }
         s = simulation.from_config(config)
         runs = list(s.run_simulation(dry_run=True))
-        over = list(x.now for x in runs if x.now>2)
+        over = list(x.now for x in runs if x.now > 2)
         assert len(runs) == config['num_trials']
         assert len(over) == 0
 

tests/test_network.py

@@ -6,7 +6,8 @@ import networkx as nx
 
 from os.path import join
 
-from soil import network, environment
+from soil import config, network, environment, agents, simulation
+from test_main import CustomAgent
 
 ROOT = os.path.abspath(os.path.dirname(__file__))
 EXAMPLES = join(ROOT, '..', 'examples')
@@ -60,22 +61,53 @@ class TestNetwork(TestCase):
         G = nx.random_geometric_graph(20, 0.1)
         env = environment.NetworkEnvironment(topology=G)
         f = io.BytesIO()
-        env.dump_gexf(f)
+        assert env.topologies['default']
+        network.dump_gexf(env.topologies['default'], f)
+
+    def test_networkenvironment_creation(self):
+        """Networkenvironment should accept netconfig as parameters"""
+        model_params = {
+            'topologies': {
+                'default': {
+                    'path': join(ROOT, 'test.gexf')
+                }
+            },
+            'agents': {
+                'topology': 'default',
+                'distribution': [{
+                    'agent_class': CustomAgent,
+                }]
+            }
+        }
+        env = environment.Environment(**model_params)
+        assert env.topologies
+        env.step()
+        assert len(env.topologies['default']) == 2
+        assert len(env.agents) == 2
+        assert env.agents[1].count_agents(state_id='normal') == 2
+        assert env.agents[1].count_agents(state_id='normal', limit_neighbors=True) == 1
+        assert env.agents[0].neighbors == 1
 
     def test_custom_agent_neighbors(self):
         """Allow for search of neighbors with a certain state_id"""
         config = {
-            'network_params': {
+            'model_params': {
+                'topologies': {
+                    'default': {
                         'path': join(ROOT, 'test.gexf')
-            },
-            'network_agents': [{
-                'agent_class': CustomAgent,
-                'weight': 1
-
-            }],
-            'max_time': 10,
-            'environment_params': {
                     }
+                 },
+                'agents': {
+                    'topology': 'default',
+                    'distribution': [
+                        {
+                            'weight': 1,
+                            'agent_class': CustomAgent
+                        }
+                    ]
+                }
+            },
+            'max_time': 10,
         }
         s = simulation.from_config(config)
         env = s.run_simulation(dry_run=True)[0]
@@ -83,3 +115,19 @@ class TestNetwork(TestCase):
         assert env.agents[1].count_agents(state_id='normal', limit_neighbors=True) == 1
         assert env.agents[0].neighbors == 1
 
+    def test_subgraph(self):
+        '''An agent should be able to subgraph the global topology'''
+        G = nx.Graph()
+        G.add_node(3)
+        G.add_edge(1, 2)
+        distro = agents.calculate_distribution(agent_class=agents.NetworkAgent)
+        aconfig = config.AgentConfig(distribution=distro, topology='default')
+        env = environment.Environment(name='Test', topologies={'default': G}, agents=aconfig)
+        lst = list(env.network_agents)
+
+        a2 = env.find_one(node_id=2)
+        a3 = env.find_one(node_id=3)
+        assert len(a2.subgraph(limit_neighbors=True)) == 2
+        assert len(a3.subgraph(limit_neighbors=True)) == 1
+        assert len(a3.subgraph(limit_neighbors=True, center=False)) == 0
+        assert len(a3.subgraph(agent_class=agents.NetworkAgent)) == 3