seeking deeper (language theory) reason behind Python design choice

Fri May 11 01:45:27 EDT 2018

On 2018年5月11日 01:51:47 +0300, Marko Rauhamaa wrote:
> Paul Rubin <no.email at nospam.invalid>:
>>> Marko Rauhamaa <marko at pacujo.net> writes:
>>> It turns out "while True" is the most natural choice in about half of
>>> the while loops.
>>>> Maybe the rest would be "repeat until" if Python had that?
>> No. "Repeat until" is a relatively infrequent need.

And again, YMMV. In my experience, most "while True" loops would be 
better off written as a "repeat... until True" loop. But since Python 
doesn't have syntax for such repeat until loops, our work-around is to 
use a while True and break out of it at the end of the loop.
To be honest, I'm having trouble thinking of a good use-case for "while 
True", now that we have infinite iterators. Most cases of
 while True:
 x = get_item()
 if not x: break
 process(x)
are better written as:
 for x in iterator:
 process(x)
-- 
Steve