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13 lines
345 B
Python
13 lines
345 B
Python
class LazyConstant:
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def __init__(self, function):
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self.value = None
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self.function = function
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def __get__(self, instance, owner):
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if self.value is None:
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self.value = self.function()
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return self.value
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def __set__(self, instance, value):
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raise AttributeError("can't set attribute")
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