def __delitem__(self, key):
        """
        Remove an item
        """
        data = object.__getattribute__(self, 'data')
        if data not in key:
            raise AttributeError(key)
        order = object.__getattribute__(self, 'order')
        comments = object.__getattribute__(self, 'comments')
        del data[key]
        order.remove(key)
        del comments[key]
dataset/ETHPy150Open twitterdev/twitter-for-bigquery/libs/config.py/Mapping.__delitem__/swapped operands of `not in`