[Python-Dev] syntax misfeature (exception)

Neal Becker ndbecker2 at gmail.com
Sat Jan 20 16:36:48 CET 2007


Georg Brandl wrote:

> Neal Becker schrieb:
>> I accidentally wrote:
>> 
>> try:
>>  ...
>> except a,b:
>> 
>> rather than:
>> 
>> try
>>  ...
>> except (a,b):
>> 
>> It appears that the 1st example syntax is silently accepted, but doesn't
>> seem to work.  Is this true?  If so, I'd say it's a wart.
> 
> Both have a meaning: The first assigns the exception object to b, while
> the second catches exception types a and b.
> 
> BTW, in Python 3.0, the first will be spelled "except a as b".
> 
> Please post questions about using the language to the comp.lang.python
> group.
> 
It's not a question, it's a critique.  I believe this is a misfeature since
it's so easy to make this mistake.



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