On 2/27/2014 3:40 PM, Chris Angelico wrote:
On Fri, Feb 28, 2014 at 10:33 AM, Nick Coghlan <ncoghlan@gmail.com> wrote:

On 28 Feb 2014 05:56, "Chris Angelico" <rosuav@gmail.com> wrote:

On Fri, Feb 28, 2014 at 6:36 AM, Glenn Linderman <v+python@g.nevcal.com>
wrote:

+1

    f() except ((TypeError, AttributeError): "No value")

is a nice extension to the idea of

    value = expr except (
        Exception1: default1,
        Exception2: default2,
        Exception3: default3,
   )

Which I've liked since I first saw it, as it neatly solves handling
multiple
except clauses.

You can already list multiple exception types. The definition of the
exception_list is exactly as per the try/except statement (bar the
'as' keyword, which I would love to see implemented some day).

Note that this example is covering the deferred case of multiple except
clauses that resolve to different values, not the already handled case of
multiple exception types that resolve to the same value.

The "nice extension" to that notation is already handled, though.

Yes.  But the point is really the location of the (), sorry if my "nice extension" comment is throwing you off that track.

    value = expr except (
        Exception1: default1,
        Exception2: default2,
        Exception3: default3,
   )




Anyway, even if you choose not to switch the parenthesis requirement in PEP,
it should at least make the "colon as in dict display, not as in suite
introduction" comparison, and note this as an alternative proposal for the
required parentheses.

Hmm. Not sure that it really helps, but okay. Will word something up.

ChrisA
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