Re: [Python-ideas] Make return inside a finally a SyntaxError

July 18, 2009


      On Sat, 18 Jul 2009 09:41:10 am Michael wrote:
...
Here are two examples of why allowing return inside a finally block
is a bad idea:
def f():
   try:
     return 3
   finally:
     return 4
Given that the finally block is guaranteed to run after exiting the try 
block, I don't see anything objectionable about that. Surprising, 
perhaps, possibly even an artifact of the CPython implementation, but 
why is it a "bad idea" that needs to be protected against?
...
def f():
   try:
     raise Exception()
   finally:
     return 4
That's no weirder than:


def f():
    try:
        raise Exception()
    except Exception:
        return 4

or:

def f():
    try:
        raise Exception()
    except Exception:
        pass
    return 4


-- 
Steven D'Aprano