endpointscfg.py 文件源码

def error(self, message):
    """Override superclass to support customized error message.

    Error message needs to be rewritten in order to display visible commands
    only, when invalid command is called by user. Otherwise, hidden commands
    will be displayed in stderr, which is not expected.

    Refer the following argparse python documentation for detailed method
    information:
      http://docs.python.org/2/library/argparse.html#exiting-methods

    Args:
      message: original error message that will be printed to stderr
    """




    subcommands_quoted = ', '.join(
        [repr(command) for command in _VISIBLE_COMMANDS])
    subcommands = ', '.join(_VISIBLE_COMMANDS)
    message = re.sub(
        r'(argument {%s}: invalid choice: .*) \(choose from (.*)\)$'
        % subcommands, r'\1 (choose from %s)' % subcommands_quoted, message)
    super(_EndpointsParser, self).error(message)