do...until wisdom needed...

[Andrew Henshaw]

I have difficulties with all the proposals that have been given in the past
for a suitable 'until' syntax.  However, I have advocated that 'do' as an
alias for 'while 1', would be cleaner, more elegant, and simpler to grasp
for new programmers (e.g., children).

Therefore, in a half-attempt to answer your question, I believe that most
Pythonic implementation of do-until would be:

do:
    some code
    if condition:
        break


Andrew Henshaw