[Python-Dev] accumulator display syntax

Guido van Rossum guido at python.org
Tue Oct 21 18:18:28 EDT 2003

> I vote for not requiring the outer parentheses unless there is an
> adjacent comma.  That would unnecessarily complicate the simple,
> elegant proposal.  
> Otherwise, I would anticipate frequent questions to the help list
> or tutor list on why something coded like your example doesn't work.
> Also, the double paren form just looks funny, like there is something
> wrong with it but you can't tell what.

OK.  I think I can pull it off in the Grammar.

> Timing
> ------
> Based on the extensive comp.lang.python discussions when I first
> floated a PEP on the subject, I conclude that the user community
> will very much accept the new form and that there is no reason
> to not include it in Py2.4.
> If there is any doubt on that score, I would be happy to update
> the PEP to match the current proposal for iterator expressions
> and solicit more community feedback.

Wonderful!  Rename PEP 289 to "generator expressions" and change the
contents to match this proposal.  Thanks for being the fall guy!

--Guido van Rossum (home page: http://www.python.org/~guido/)

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