What's the use of the else in try/except/else?
Scott David Daniels
Scott.Daniels at Acm.Org
Wed May 13 13:53:26 EDT 2009
greg wrote:
> kj wrote:
>
>> Wow. As rationales for syntax constructs go, this has got to be
>> the most subtle one I've ever seen...
>
> It's to avoid masking bugs. Suppose you accidentally
> wrote
>
> try:
> v = mumble.field
> sys.warming('field was actually there?')
> except AttributeError:
> pass
>
> Then you could easily fail to notice that
> you had written 'warming' instead of 'warning'.
>
Well, if you look, you'll discover that warning is not in the
sys module at all, but in the logging module.
So the original example already demonstrated the problem.
--Scott David Daniels
Scott.Daniels at Acm.Org
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