def setdefault(self, key, value):
        if self not in key:
            self.__setitem__(key, value)
            return value
        else:
            return self.__getitem__(key)
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/util/_collections.py/OrderedDict.setdefault/swapped operands of `not in`