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96 lines
2.9 KiB
Python
96 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Clement Michard (c) 2015
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"""
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class Emotion:
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"""Defines an emotion."""
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emotions = {} # name to emotion (str -> Emotion)
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def __init__(self, name, parent_name=None):
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"""Initializes an Emotion object.
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name -- name of the emotion (str)
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parent_name -- name of the parent emotion (str)
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"""
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self.name = name
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self.parent = None
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self.level = 0
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self.children = []
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if parent_name:
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self.parent = Emotion.emotions[parent_name] if parent_name else None
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self.parent.children.append(self)
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self.level = self.parent.level + 1
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def get_level(self, level):
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"""Returns the parent of self at the given level.
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level -- level in the hierarchy (int)
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"""
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em = self
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while em.level > level and em.level >= 0:
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em = em.parent
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return em
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def __str__(self):
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"""Returns the emotion string formatted."""
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return self.name
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def nb_children(self):
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"""Returns the number of children of the emotion."""
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return sum(child.nb_children() for child in self.children) + 1
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@staticmethod
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def printTree(emotion=None, indent="", last='updown'):
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"""Prints the hierarchy of emotions.
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emotion -- root emotion (Emotion)
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"""
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if not emotion:
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emotion = Emotion.emotions["root"]
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size_branch = {child: child.nb_children() for child in emotion.children}
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leaves = sorted(emotion.children, key=lambda emotion: emotion.nb_children())
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up, down = [], []
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if leaves:
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while sum(size_branch[e] for e in down) < sum(size_branch[e] for e in leaves):
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down.append(leaves.pop())
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up = leaves
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for leaf in up:
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next_last = 'up' if up.index(leaf) is 0 else ''
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next_indent = '{0}{1}{2}'.format(indent, ' ' if 'up' in last else '│', " " * len(emotion.name))
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Emotion.printTree(leaf, indent=next_indent, last=next_last)
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if last == 'up':
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start_shape = '┌'
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elif last == 'down':
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start_shape = '└'
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elif last == 'updown':
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start_shape = ' '
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else:
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start_shape = '├'
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if up:
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end_shape = '┤'
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elif down:
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end_shape = '┐'
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else:
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end_shape = ''
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print ('{0}{1}{2}{3}'.format(indent, start_shape, emotion.name, end_shape))
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for leaf in down:
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next_last = 'down' if down.index(leaf) is len(down) - 1 else ''
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next_indent = '{0}{1}{2}'.format(indent, ' ' if 'down' in last else '│', " " * len(emotion.name))
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Emotion.printTree(leaf, indent=next_indent, last=next_last)
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