util.py 文件源码

def add_deprecated_argument(add_argument, argument_name, nargs):
    """Adds a deprecated argument with the name argument_name.

    Deprecated arguments are not shown in the help. If they are used on
    the command line, a warning is shown stating that the argument is
    deprecated and no other action is taken.

    :param callable add_argument: Function that adds arguments to an
        argument parser/group.
    :param str argument_name: Name of deprecated argument.
    :param nargs: Value for nargs when adding the argument to argparse.

    """
    if _ShowWarning not in configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE:
        # In version 0.12.0 ACTION_TYPES_THAT_DONT_NEED_A_VALUE was
        # changed from a set to a tuple.
        if isinstance(configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE, set):
            # pylint: disable=no-member
            configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE.add(
                _ShowWarning)
        else:
            configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE += (
                _ShowWarning,)
    add_argument(argument_name, action=_ShowWarning,
                 help=argparse.SUPPRESS, nargs=nargs)