__init__.py 文件源码

def main(initial_args=None):
    if initial_args is None:
        initial_args = sys.argv[1:]

    autocomplete()

    try:
        cmd_name, cmd_args = parseopts(initial_args)
    except PipError:
        e = sys.exc_info()[1]
        sys.stderr.write("ERROR: %s" % e)
        sys.stderr.write(os.linesep)
        sys.exit(1)

    command = commands[cmd_name]()
    return command.main(cmd_args)