How Do You Write a Palindrome Tester Function in Python?

Problem scenario
You want to write a palindrome tester function in Python without the :: operator in the code (that reverses the order of the list). What do you do?

Solution

def palindrome_tester(s):
  s = s.lower()
  x = len(s) // 2
  for i in range(x):
    if s[i] == s[-(i+1)]:
      pass
    else:
      return False
  return True

var_string = "mmnMM"

if (palindrome_tester(var_string)):
  print(var_string + " is a palindrome!")
else:
  print(var_string + " is NOT a palindrome!")