completion.py 文件源码

def autocomplete(parser):
    """
    Adds support for shell completion via argcomplete_ by patching given
    `argparse.ArgumentParser` (sub)class.

    If completion is not enabled, logs a debug-level message.
    """
    if COMPLETION_ENABLED:
        argcomplete.autocomplete(parser)
    elif 'bash' in os.getenv('SHELL', ''):
        logger.debug('Bash completion not available. Install argcomplete.')