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 <other computer
language>, 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
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