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

title, tags, expertise, firstSeen, lastUpdated

title	tags	expertise	firstSeen	lastUpdated
Palindrome	string	intermediate	2018-02-01T10:19:59+02:00	2020-11-02T19:28:27+02:00

Checks if the given string is a palindrome.

• Use str.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, using slice notation.

from re import sub

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

palindrome('taco cat') # True