[Orygin]

Won't prevent you from shipping this in prod. The stack trace you shown only appearing when you execute the code.

[kstrauser]

Or run mypy etc., because you care about your code.

[cess11]

Tests will, however.

[Orygin]

Sure but that's not what we were talking about. Plus I don't need to add tests like this in my code for it to be valid once compiled