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整合

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class MyObject(object):   def __init__(self):        self.x = 9   def power(self):        return self.x * self.xobj = MyObject()fn = getattr(obj, 'power')setattr(obj, 'y', 19)print(hasattr(obj, 'x'))print(obj.x)print(hasattr(obj, 'y'))print(hasattr(obj, 'y') )print(getattr(obj, 'y'))print(getattr(obj, 'z', 404))print(hasattr(obj, 'power'))print(getattr(obj, 'power'))print(fn)print(fn())

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