(param1)() got an unexpected keyword argument (!r)

Raise code

""" wards-compatibility with Python 2.7 to allow treating 'warn' as keyword-only.
    """
    if not kwargs:
        return False
    elif len(kwargs) > 1 or "warn" not in kwargs:
        kwargs.pop("warn", None)
        arg = next(iter(kwargs.keys()))
        raise TypeError(
            "{}() got an unexpected keyword argument {!r}".format(func_name, arg)
        )
    return kwargs["warn"]


def _get_config_var(name, warn=False):
    # type: (str, bool) -> Union[int, str, None]
    valu