[Python] How to set a global click option that would be used as a base for different click...

I'm using Python Click to develop a cli. I have the following situation:

First I have a config file in config.py, where I store re-usable variables across my project

# config.py

class Config:
base_path = "/home/project/"


Then, I have a cli command in command.py, where I'm using the path config variable

# command.py
import click
from config import Config

@click.command()
@click.option('--path', show_default=True, default=f"{Config.base_path}/some/another_path.json")
def some_command(path):
""" command example"""
print(f"my path is: {path}")


And finally, I have my parent cli or my entry point

import click
from config import Config
from command import some_command

@click.group()
@click.option('--base-path', show_default=True, default=Config.base_path)
@pass_context
def cli(ctx, base_path):
""" entry point"""
ctx.obj = {"base_path": base_path}

cli.add_command(some_command)


So as you can see, I have a global config variable that I want users to be able to override through the cli

For example, by running $ cli --base-path ~/custom/path some_command, I want the --path option for the some_command to be overridden to ~/custom/path/some/another_path.json as well since it is based on it.

However, that is not what is happening because the --base-path would be overridden by the user at runtime and therefore the changes are not reflected. So my question is what is the best way to solve this problem?

I tried to override the Config.base_path var like this:

@click.group()
@click.option('--base-path', show_default=True, default=Config.base_path)
@pass_context
def cli(ctx, base_path):
""" entry point"""
Config.base_path = base_path
ctx.obj = {"base_path": base_path}


Obviously that did not work because the variable was overridden in the context, which is after being set in the some_command command already.

What can I try next?

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