python中的互斥选项组请点击

python中的互斥选项组请点击

我最近也遇到过同样的用例。这就是我想出的。对于每个选项，您都可以给出冲突选项的列表。

from click import command, option, Option, UsageErrorclass MutuallyExclusiveOption(Option):    def __init__(self, *args, **kwargs):        self.mutually_exclusive = set(kwargs.pop('mutually_exclusive', []))        help = kwargs.get('help', '')        if self.mutually_exclusive: ex_str = ', '.join(self.mutually_exclusive) kwargs['help'] = help + (     ' NOTE: This argument is mutually exclusive with '     ' arguments: [' + ex_str + '].' )        super(MutuallyExclusiveOption, self).__init__(*args, **kwargs)    def handle_parse_result(self, ctx, opts, args):        if self.mutually_exclusive.intersection(opts) and self.name in opts: raise UsageError(     "Illegal usage: `{}` is mutually exclusive with "     "arguments `{}`.".format(         self.name,         ', '.join(self.mutually_exclusive)     ) )        return super(MutuallyExclusiveOption, self).handle_parse_result( ctx, opts, args        )

然后使用常规

option

装饰器，但传递

cls

参数：

@command(help="Run the command.")@option('--jar-file', cls=MutuallyExclusiveOption,        help="The jar file the topology lives in.",        mutually_exclusive=["other_arg"])@option('--other-arg',        cls=MutuallyExclusiveOption,        help="The jar file the topology lives in.",        mutually_exclusive=["jar_file"])def cli(jar_file, other_arg):    print "Running cli."    print "jar-file: {}".format(jar_file)    print "other-arg: {}".format(other_arg)if __name__ == '__main__':    cli()

这里的要点
包括上面的代码，并显示了运行它的输出。

如果这对您不起作用，那么在单击github页面上还会有一些（封闭的）问题提及此问题，并提供了一些您可以使用的想法。

• https://github.com/pallets/click/issues/257
• https://github.com/pallets/click/issues/509