def __init__(self, name, table_expr):
        Node.__init__(self, [name, table_expr])

        if table_expr.schema() not in name:
            raise KeyError("'{0}' is not a field".format(name))

        self.name = name
        self.table = table_expr
dataset/ETHPy150Open cloudera/ibis/ibis/expr/types.py/TableColumn.__init__/swapped operands of `not in`