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

...
#print(x)
doit(x,end+1)
...

should be

...
#print(x)
return doit(x,end+1)
...

You are missing the return statement in the if block. If the function is calls itself recursively, it doesn't return the return value of that call.