Weird function return value?

Question

I am trying to remove everything between curly braces in a string, and trying to do that recursivesly. And I am returning x here when the recursion is over, but

Answer 1

Note that it is easier to use regular expressions:

import re
strs = "i am a string but i've some {text in brackets} braces, and here are some more {i am the second one} braces"
strs = re.sub(r'{.*?}', '', strs)