mirror of https://github.com/TwoWater/Python
35 lines
984 B
Python
35 lines
984 B
Python
#!/usr/bin/env python3
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# -*- coding: UTF-8 -*-
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class User(object):
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def __getattr__(self, name):
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print('调用了 __getattr__ 方法')
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return super(User, self).__getattr__(name)
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def __setattr__(self, name, value):
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print('调用了 __setattr__ 方法')
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return super(User, self).__setattr__(name, value)
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def __delattr__(self, name):
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print('调用了 __delattr__ 方法')
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return super(User, self).__delattr__(name)
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def __getattribute__(self, name):
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print('调用了 __getattribute__ 方法')
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return super(User, self).__getattribute__(name)
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if __name__ == '__main__':
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user = User()
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# 设置属性值，会调用 __setattr__
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user.attr1 = True
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# 属性存在,只有__getattribute__调用
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user.attr1
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try:
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# 属性不存在, 先调用__getattribute__, 后调用__getattr__
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user.attr2
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except AttributeError:
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pass
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# __delattr__调用
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del user.attr1
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