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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def remove_on_change(self, attr, *callbacks):
        ''' Remove a callback from this object '''
        if len(callbacks) == 0:
            raise ValueError("remove_on_change takes an attribute name and one or more callbacks, got only one parameter")
        _callbacks = self._callbacks.setdefault(attr, [])
        for callback in callbacks:
            _callbacks.remove(callback)