30-seconds-of-code/snippets/palindrome.md

title, tags

title	tags
palindrome	string,intermediate

Returns True if the given string is a palindrome, False otherwise.

Use input_string.lower() and re.sub() to convert to lowercase and remove non-alphanumeric characters from the given string. Then, compare the new string with its reverse.

from re import sub

def palindrome(input_string):
  s = sub('[\W_]', '', input_string.lower())
  return s == s[::-1]

palindrome('taco cat') # True