class SimpleItemContainer(object):
def __init__(self, id, item_containers):
self.id = id
self.data = {}
for item in item_containers:
self.data[item.id] = item
class BetterSimpleItemContainer(object, DictMixin):
def __getitem__(self, id):
return self.data[id]
def __setitem__(self, id, value):
self.data[id] = value
def __delitem__(self, id):
del self.data[id]
def keys(self):
return self.data.keys()
class CommonEqualityMixin(object):
def __eq__(self, other):
return (isinstance(other, self.__class__)
and self.__dict__ == other.__dict__)
def __ne__(self, other):
return not self.__eq__(other)
class Foo(CommonEqualityMixin):
def __init__(self, item):
self.item = item
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