decorators.py 文件源码

def _make_command(f, name, attrs, cls):
    if isinstance(f, Command):
        raise TypeError('Attempted to convert a callback into a '
                        'command twice.')
    try:
        params = f.__click_params__
        params.reverse()
        del f.__click_params__
    except AttributeError:
        params = []
    help = attrs.get('help')
    if help is None:
        help = inspect.getdoc(f)
        if isinstance(help, bytes):
            help = help.decode('utf-8')
    else:
        help = inspect.cleandoc(help)
    attrs['help'] = help
    _check_for_unicode_literals()
    return cls(name=name or f.__name__.lower(),
               callback=f, params=params, **attrs)