[Python-Dev] Informal educator feedback on PEP 572 (was Re: 2018 Python Language Summit coverage, last part) (original) (raw)

Guido van Rossum guido at python.org
Tue Jul 3 18:08:27 EDT 2018

I smell a new thread. :-)

On Tue, Jul 3, 2018 at 3:06 PM Terry Reedy <tjreedy at udel.edu> wrote:

On 7/3/2018 2:42 AM, Tim Peters wrote:

> So if we had it to do over again I'd sigh and accept "generator > comprehensions" anyway. It's been an eternal PITA - and especially in > the PEP 572 threads! - to keep typing "comprehensions or generator > expressions". Then again, if I had the power of Guido's time machine, > I'd go back more, and not use "comprehensions" for anything to begin > with. Amen. I cannot make 'comprehension' in this context comprehensible without some linguistic twisting. > Instead we'd have list, dict, set, and generator twizzlers, > affectionately called listwiz, dictwiz, setwiz, and gentwiz by the cool > kids :-) I learned the set notion, such as {n^2: n in N; 1 <= n < 100, n even} # math_ _{n*n for n in range(1,100) if not n%2} # python_ _as 'set builder' notation._ _If we had followed the math precedent, instead of , we would have set builders, list builders, dict builders, and generator builders. I half seriously think we should consider this for 3.8 for the benefit of future Python programmers as well as ourselves. Comprehensions that can contain assignment expressions are a slightly new thing.

-- Terry Jan Reedy

Python-Dev mailing list Python-Dev at python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/guido%40python.org

-- --Guido van Rossum (python.org/~guido) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20180703/d60d47f5/attachment.html>

More information about the Python-Dev mailing list