> Passing arguments to functions is thread-safe, but that soon becomes tedious when there’s more than a few or when they need to pass down through several layers of calls before reaching the point they should affect. Introducing a new setting to existing code is often easier with a parameter object than adding arguments.

But also, if you really wanted to, you could set the argsparse object to a global variable and then import it everywhere else. So that is not a limitation.

    sub1 = [create subparser]
    sub1.add_argument('-x')
    sub2 = [create subparser]

Typer completely eliminates this potential bug, because the arguments are defined as type annotations in the sub-command function itself.

> arguments are defined as type annotations in the sub-command function itself

So you duplicate logic in your type definitions instead of as instructions. Whatever makes you happy i guess.