PEP 765: Disallow return/break/continue that exit a finally block

[iritkatriel]

@steve.dower

So is it better if the error is still raised? Or better if everyone who uses your module gets a warning (that breaks their own tests/users) whether that error ever occurs or not?

The latter, because the exception will only be raised in some edge case in prod so the whole thing would slip through testing.