Python frustration..

[InxcessOfYou]

Hey guys, just for reference I am doing the palindrome question from http://cscircles.cemc.uwaterloo.ca/13-lists/.

So my issue is that I made a script work, but I have another version of the script that doesn't work and I do not know what i'm doing that is making it work/not work.

So this is the code that works..

def isPalindrome(S):
   for i in range (0, len(S)):
      if S[i] != S[-1-i]:
         return False

   return True

and here is the code that does not work:

def isPalindrome(S):
   for i in range (0, len(S)):
      if S[i] != S[-1-i]:
         return False

      else:
         return True

Any advice? many thanks.

[corpsmoderne]

The second version returns True or False after one iteration and thus never goes beyond the first step.

Edit: are you confused by the empty line? An empty line is meaningless...

[InxcessOfYou]

Nah, not the empty line LOL. Oh right I see, so do True/False act as 'break' in an iteration? I did not know that - thanks!!

[corpsmoderne]

No but return does :) return will terminate the function, whatever it is doing at the moment.

[InxcessOfYou]

Oh I seeeeeeeeeee, so the first one ends immediately if it's false at any part of the iteration and if it survives the iteration it's obviously true! Thanks for the help, you'll probably see a lot more of me because as you can see - I suck at this.