On Wed, Jun 16, 2021 at 10:51 AM Soni L. <fakedme+py@gmail.com> wrote:
>
> Sometimes it would be useful to be able to write:
>
> def foo():
>   try: return thing()
>   except ValueError;
>   try: return otherthing()
>   except ValueError;
>   try: return yetotherthing()
>   except ValueError;
>   if shouldraise(): raise
>
> But currently this needs to be written like so:
>
> def foo():
>   try: return thing()
>   except ValueError:
>     try: return otherthing()
>     except ValueError:
>       try: return yetotherthing()
>       except ValueError:
>         if shouldraise(): raise
>
> Look at all that unnecessary indentation! Would be nice to get rid of it.

Dangerous idea - my first interpretation of that syntax was that it
would be equivalent to "except ValueError: pass", which would be very
confusing (it's subtly different in your example with return, and
drastically different in other cases).

Are you doing this sort of thing a lot? And if you are, do you
actually need/want the exception chaining that comes from burying more
and more code into the except clauses? I know this is just a trivial
example, but I'd be looking to see if it can be done with a loop
instead.

def foo():
    for func in (thing, otherthing, yetotherthing):
        try: return func()
        except ValueError: pass

or something like that.

ChrisA
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