Created
October 12, 2017 01:59
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代理模式 属性访问控制
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class FileStorage(object): | |
def __init__(self, stream, **kwargs): | |
self.stream = stream | |
def __getattr__(self, name) | |
return getattr(self.stream, name) |
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__getattr__
和__setattr__
解析:__getattr__
: 当实例属性和类的属性没有找到时调用, 能找就不调用, 方法计算属性或者抛出AttributeError
异常