def foo(exc):
   try:
       1/0
   except Exception as exc:
       ...
   finally:
       return exc

foo(1)

Executing the following code results in UnboundLocalError, while exc has been defined and passed to a function explicitly.

I think this is something similar to python2 issue when list comprehensions where overwriting local variable values, expected behaviour in here is that foo(1) returns 1