tpda.py 文件源码

def params(arg):
    """
    Parse `arg` and returns a dict describing the TPDA
    arguments.

    Resolution order:
        - `arg` is a string is parsed as an URL
        - `arg` has an items() method and is parsed
           (works for multidicts, ..)
        - `arg` is a iterable is parsed as a
           ((name, value), (name, value), ..)
    """
    if isinstance(arg, str):
        pr = parse.urlparse(arg)
        if not pr.query:
            raise exceptions.IncompleteURI
        return Params(parse.parse_qsl(pr.query)).params()
    elif hasattr(arg, 'items'):
        return Params(arg.items()).params()
    elif hasattr(arg, '__iter__'):
        return Params(arg).params()