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19 lines
448 B
Python
19 lines
448 B
Python
# Bug in 3.3 weakset
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# Bug was not having a rule for 3.x "comp_for"
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class WeakSet:
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def __init__(self, data=None):
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self.data = set(data)
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def __iter__(self):
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for item in self.data:
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if item is not None:
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yield item
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def union(self, other):
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return self.__class__(e for s in (self, other) for e in s)
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a = WeakSet([1, 2, 3])
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b = WeakSet([1, 3, 5])
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assert list(a.union(b)) == [1, 2, 3, 5]
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