How to activate only options when we use click.group()

Question

I'm currently working to create Command line arguments with click. I almost done the research, and everything is working fine. The issue is I want to use the only option while working with the click.group() other than sub commands.

Lets say myCommand --version this should print my application's version but it's raising error saying Error: Missing command.

My code is:

import sys import os as _os import click import logging from myApp import __version__ @click.group() @click.option('--version', is_flag=True, help="Displays project version") @click.pass_context def cli(context, version: bool): if version: print(__version__) @cli.command() @click.pass_context def init(context): click.echo(message="Starting initilization for the project" + str(context.obj)) @cli.command() @click.pass_context def install(context): click.echo(message="Starting installing from the saved data")

Here --version is only working when I call the command with option like cli --version init, But I want this to be cli --version to print the version.

Can anyone help me with this?

afterburner · Accepted Answer · 2020-03-21 13:47:07Z

There is a click.version_option available as a buillt in, which should do what you wanted.

Documentation for version option

However, if you want to roll your own implementation, I think you can try adding invoke_without_command=True to your group declaration as such:

@click.group(invoke_without_command=True)

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