Python Palindrome Challenge

Question

I've been asked to write a program that tests if a given string is a palindrome or not. n is a string of length 1<=x<=10000 containing no spaces or special characters. I wrote the following in a few minutes:

 def run(n):
  n = n.replace('\n','')
  nprime = n[::-1]
  Bool = True
  for i in range(0,len(n)):
    if not n[i]==nprime[i]:
      Bool = False
  if Bool==True:
    print "Y"
  else:
    print "N"

Apparently this fails for some test case. I don't know the test case for which it fails. I tried it out with all edge-cases I could think of and my script seems to work fine. Does anyone have any idea where it could be failing?

Answer 1

I would simplify your code to:

def check(inval):
    val = inval.strip().lower()
    lav = val[::-1]
    print (val == lav) and 'Y' or 'N'

If you would like a really generalised version use:

def check(inval):
    val = ''.join([l for l in inval if l.isalnum()]).lower()
    lav = val[::-1]
    result = (val == lav)
    # print result and 'Y' or 'N' # Since comments indicate some dislike this!
    return result