[Python-ideas] except expression

[Greg Ewing]

> On Mon, Feb 17, 2014 at 7:39 AM, Jan Kaliszewski <zuo at chopin.edu.pl> wrote:
> 
>>Sorry, I don't catch the point.  If I needed to use a complex
>>exception spec (a tuple-like) and/or a tuple as the "default"
>>expression -- I'd just do it:
>>
>>    some_io() except (FileNotFoundError: (1, 2, 3),
>>                      (ValueError, TypeError): 'spam')
>>
>>I see no ambiguity here.

To make it parseable, it would probably be necessary to disallow
commas in the expression following the colon (i.e. it would
be a 'test' rather than a 'testlist' in terms of the grammar).

-- 
Greg