variable loop depth

[Skaperen]

if i use recursion, i can make it just not recurse when it no longer needs to (when the sum of the indexes reaches a certain value). when i did this in C i basically did the same as my 360 assembler version and used a goto to escape the loop to effect the same as recursion (without pushing the stack) and another to re-enter the loop (without pulling the stack). but it looks like recursion is the way to go in Python. i'm wondering if i can do this as a generator.