bcr

class QuestionNode:
    def __init__(self, question):
        self.question = question
        self.yes_answer_node = None
        self.no_answer_node = None

class AnimalNode:
    def __init__(self, animal, parent_question_node):
        self.animal = animal
        self.parent_question_node = parent_question_node

bcr

from __future__ import with_statement

class Foo:
  pass

bcr

def f(var):
  print "%s" % (var)

def g(var):
  pass