class ListCont():
    def __repr__(self):
        return f'Instance of {self.__class__.__name__} , address {id(self)}, {self.__attrname()}'
    def __attrname(self):
        result = ''
        for attr in dir(self):
            if attr[:2] == '__' and attr[-2:] == '__':
                result += f'\tname {attr} = <>\n'
            else:
                result += f'{attr} = {getattr(self,attr)}\n'
        return result