Python survey 2020

[Albert Chan]

(11-01-2020 05:59 AM)Wes Loewer Wrote:  I know they won't add it, but Python could use a DO-WHILE or REPEAT-UNTIL ...

Assumed Python do have repeat/until:

repeat:
      ... # some code
      if condition: continue
      bad = 0
      ... # code that might turned "bad"
until bad

if condition is true, it will jump to line "until bad".
However, bad is a local variable, not existed before condition test.
(Or worse, bad existed outside repeat/until loop, and used for until ...)

You could solve it by moving up bad=0 before the condition test.
But, that would be messy to document repeat/until usage.

Static typed language does not have this problem. Code won't compile.