使命令可用于python click中的两个组? [英] Make a command available for two groups in python click?

问题描述

我正在使用click编写Python中的cli程序，我需要编写如下内容:

I'm using click to write a cli program in Python, and I need to write something like this:

import click


@click.group()
def root():
    """root"""
    pass


@root.group()
def cli():
    """test"""
    pass


@root.group()
def cli2():
    """test"""
    pass


@cli.command('test1')
@cli2.command('test1')
def test1():
    """test2"""
    print 1234
    return


root()

但是这将失败:

TypeError:尝试两次将回调转换为命令.

TypeError: Attempted to convert a callback into a command twice.

如何在多个组之间共享命令?

How can I share the command between multiple groups?

推荐答案

group.command()

The group.command() decorator is a short cut which performs two functions. One is to create a command, the other is to attach the command to a group.

因此，要与多个组共享一个命令，可以为一个组装饰命令，例如:

So, to share a command with multiple groups, you can decorate the command for one group like:

@cli.command('test1')

然后，由于已经创建了命令，因此您可以简单地将click命令对象添加到其他组中，例如:

Then, since the command has already been created, you can simply add the click command object to other groups like:

cli2.add_command(test1)

测试代码:

import click


@click.group()
def root():
    """root"""
    pass


@root.group()
def cli1():
    click.echo('cli1')


@root.group()
def cli2():
    click.echo('cli2')


@cli1.command('test1')
@click.argument('arg1')
def test1(arg1):
    click.echo('test1: %s' % arg1)

cli2.add_command(test1)

root('cli2 test1 an_arg'.split())

结果:

cli2
test1: an_arg

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