带有Python点击库的任意命令行关键字 [英] Arbitrary command line keywords with Python's click library

问题描述

我有一个使用Python的 click 库构建的命令行工具.我想将此工具扩展为使用用户定义的关键字，如下所示:

I have a command line tool built with Python's click library. I want to extend this tool to use user-defined keywords like the following:

$ my-cli --foo 10 --bar 20

通常我会在命令中添加以下代码

Normally I would add the following code to my command

@click.option('--foo', type=int, default=0, ...)

但是，就我而言，有一些用户定义的关键字.我不知道用户要提前分隔foo或bar或其他内容.

However in my case there are a few keywords that are user defined. I won't know that the user wants to sepcify foo or bar or something else ahead of time.

目前，我最好的解决方案是使用字符串并进行自己的解析

Currently, my best solution is to use strings and do my own parsing

$ my-cli --resources "foo=10 bar=20"

可以使用，但是不太愉快.

Which would work, but is slightly less pleasant.

推荐答案

我认为这应该有效:

import click


@click.command(context_settings=dict(ignore_unknown_options=True,))
@click.option('-v', '--verbose', is_flag=True, help='Enables verbose mode')
@click.argument('extra_args', nargs=-1, type=click.UNPROCESSED)
def cli(verbose, extra_args):
    """A wrapper around Python's timeit."""
    print(verbose, extra_args)


if __name__ == "__main__":
    cli()

测试:

$ python test.py --foo 12
False ('--foo', '12')

$ python test.py --foo 12 -v
True ('--foo', '12')

来自: http://click.pocoo.org/5/高级/#forwarding-unknown-options

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