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作业

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雷锋20110

#1 Created at ... [Delete] [Delete and Lock User]

class Screen(object): @property def width(self): return self.width @width.setter def width(self,value): if not isinstance(value,(int,float)): raise ValueError('please input a number') self._width = value

@property
def height(self):
    return self._height
@height.setter
def height(self,value):
    if not isinstance(value,(int,float)):
        raise ValueError('please input a number')
    self._height = value

@property
def resolution(self):
    return self._width * self._height
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