python - check at the end of the loop if need to run again

Question

It\'s a really basic question but i can\'t think at the second. How do i set up a loop that asks each time the function inside runs whether to do it again. So it runs it then sa

Answer 1

There are two usual approaches, both already mentioned, which amount to:

while True:
    do_stuff() # and eventually...
    break; # break out of the loop

or

x = True
while x:
    do_stuff() # and eventually...
    x = False # set x to False to break the loop

Both will work properly. From a "sound design" perspective it's best to use the second method because 1) break can have counterintuitive behavior in nested scopes in some languages; 2) the first approach is counter to the intended use of "while"; 3) your routines should always have a single point of exit