mirror of https://github.com/python/cpython
35 lines
832 B
Python
35 lines
832 B
Python
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class Delegator:
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# The cache is only used to be able to change delegates!
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def __init__(self, delegate=None):
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self.delegate = delegate
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self.__cache = {}
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def __getattr__(self, name):
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attr = getattr(self.delegate, name) # May raise AttributeError
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setattr(self, name, attr)
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self.__cache[name] = attr
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return attr
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def resetcache(self):
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for key in self.__cache.keys():
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try:
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delattr(self, key)
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except AttributeError:
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pass
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self.__cache.clear()
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def cachereport(self):
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keys = self.__cache.keys()
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keys.sort()
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print keys
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def setdelegate(self, delegate):
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self.resetcache()
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self.delegate = delegate
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def getdelegate(self):
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return self.delegate
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