[Python-Dev] Issue 4199: combining assignment with global & nonlocal

[Benjamin Peterson]

Agreed. The currently supported syntax (a global/nonlocal line and an
assignment) is not too painful to figure out the ambiguity of the
proposed syntax.

2013/6/29 Guido van Rossum <guido at python.org>:
> I agree that there are problems with the idea of combining assignment
> and global statements, because the ambiguity of "global x, y = p, q"
> is just too much to handle. The only case would be if there was only a
> single variable, but that fails the test of easy generalization. So
> let's close it.
>
> --Guido
>
> On Sat, Jun 29, 2013 at 3:00 PM, A.M. Kuchling <amk at amk.ca> wrote:
>> Issue 4199 begins with a self-explanatory comment:
>>
>>       PEP 3104 says that the nonlocal and global statements should
>>       allow a shorthand. ("global x; x = 3" == "global x = 3") This
>>       patch implements that.
>>
>> Benjamin posted his patch on 2008-10-24.  It got postponed to 3.2
>> because it was too late for 3.1, and then to 3.3 because 3.2 still
>> fell under the language moratorium, and then was forgotten for 3.3.
>>
>> Georg Brandl and Jeremy Hylton raised some issues with the patch and
>> with the PEP's specification:
>> http://bugs.python.org/issue4199#msg100015
>>
>> We've gone five years in 3.x without supporting this statement form.
>> Is it still worth implementing it for 3.4?  Or should the issue simply
>> be closed (and maybe a note added to the PEP that "we didn't do this
>> after all")?
>>
>> --amk
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>
>
>
> --
> --Guido van Rossum (python.org/~guido)
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-- 
Regards,
Benjamin