"do" as a keyword

[Terry Reedy]

"Steven D'Aprano" <steve at REMOVE-THIS-cybersource.com.au> wrote in message 
news:13lts6gb9t2j350 at corp.supernews.com...
||
| But loops that run at least once is a basic element of algorithms.
| Perhaps not as common as the zero or more times of the while loop, but
| still fundamental. It is a shame it has to be faked using:
|
| while True: # force the first iteration to always run
|    process
|    if condition: break
|
| Ugly and misleading.

I disagree.  Nothing is being faked.  The generic loop is

while True:
    pre_process
    if condition: break
    post_process

If there is no pre_process, abbreviate the first two lines as 'while 
condition:'.  If there is no post_process, some would like another 
abbreviation.  Understanable.  But the use cases seem relatively few.  And 
anyway, a competant programmer must understand the generic loop and a 
fraction form, which I believe is at least as common as the no post_process 
case.

Terry Jan Reedy