core.py 文件源码

def _command_line_ok(_cache=[]):
    """ Return True if command line does not contain any
    help or display requests.
    """
    if _cache:
        return _cache[0]
    ok = True
    display_opts = ['--'+n for n in Distribution.display_option_names]
    for o in Distribution.display_options:
        if o[1]:
            display_opts.append('-'+o[1])
    for arg in sys.argv:
        if arg.startswith('--help') or arg=='-h' or arg in display_opts:
            ok = False
            break
    _cache.append(ok)
    return ok