利用描述符原理完成自定製@property、@classmethod、@staticmethod

1、@propertypython class Lazyproperty: def __init__(self,func): self.func=func def __get__(self, instance, owner): print('這是咱們本身定製的靜態屬性,r1.area實際是要執行r1.area()') if insta

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