[Edu-sig] Using try / except: any stipulations against routine use?

[Corey Richardson]

On 12/13/2011 04:30 PM, Kirby Urner wrote:
> I think of a "key not found" event
> in a dict as "routine, to be expected" whereas I think of
> try: / except: as for "crying wolf" (not for everyday
> contingencies).  The opposite bias is:  why make that
> distinction, try: / except: is a perfectly reasonable
> construct for trapping a new key to a dict.
>

More evidence for the "perfectly reasonable": Iterators are implemented 
with the StopIteration exception. You can find a few other examples in 
the language for things like that. I think it's perfectly reasonable myself.

-- 
Corey Richardson