[python][sqlalchemy][异常]SyntaxError: non-keyword arg after keyword arg - V2EX
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geew

[python][sqlalchemy][异常]SyntaxError: non-keyword arg after keyword arg

  •   
  •   geew Aug 22, 2013 4531 views
    This topic created in 4647 days ago, the information mentioned may be changed or developed.
    @classmethod
    def get(cls, id=None, **kwarg):
    return con_sesison.query(cls).filter_by(or_(id=id, and_(**kwarg))).scalar()

    异常:

    return con_sesison.query(cls).filter_by(or_(id=id, and_(**kwarg))).scalar()

    SyntaxError: non-keyword arg after keyword arg

    个人感觉没错啊, 大家看看
  • ID
  • Keyword
  • arg    6 replies    1970-01-01 08:00:00 +08:00
    classmethod
        1
    classmethod  
       Aug 22, 2013
    少年，你召唤了伟大的 classmethod 君，我可以帮你解决 3 个 bug。
    ipconfiger
        2
    ipconfiger  
       Aug 22, 2013
    @geew (cls, id=None, **kwarg): id已经是kwarg了，后来又来个kwarg，是不行地
    geew
        3
    geew  
    OP
       Aug 22, 2013
    @classmethod 哈哈 你这名字 霸气啊
    reorx
        4
    reorx  
       Aug 22, 2013   1
    (id=id, and_(**kwarg)))

    这里 id=id 是 keyword argument, and_(**kwarg) 是 argument，顺序错误，arguments 应该在 keyword arguments 前面。

    http://docs.python.org/2/tutorial/controlflow.html#keyword-arguments
    geew
        5
    geew  
    OP
       Aug 22, 2013
    @ipconfiger 这是可以的, 是or_函数的问题, 两个参数倒过来就对了, 谢谢啦
    geew
        6
    geew  
    OP
       Aug 22, 2013
    @reorx 嗯 就是这个问题 谢谢
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