I've been trying to have my code as clear as possible in terms of typing suggestions but I always end up ignoring a few of them to prevent the code quality violation, the one that most annoys me is this example below.

I'm writing one API service then usually what I do is:

• create a config.py file with some content like this:

from os import getenv as env
CONNECTION_STRING = env("CONNECTION_STRING")
... and some more entries like this
then I assert them
env_vars = [CONNECTION_STRING]
for vars in env_vars:
 assert vars is not None

From this part, I'm already making sure that this variable cannot be None, but when I import this constant in another file that I may have or not use it as an argument I always end up with something like...

Argument of type "str | None| cannot be assigned to parameter...

So my point is I don't want to check if these constants are None on every piece of code that I need to use, so maybe I'm not sure if I'm doing it properly or indeed we need some extra, extra, extra value validation before using it...