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snippets/python/s/palindrome.md

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+---
+title: Palindrome
+type: snippet
+language: python
+tags: [string]
+cover: succulent-6
+dateModified: 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.
+
+```py
+from re import sub
+
+def palindrome(s):
+  s = sub('[\W_]', '', s.lower())
+  return s == s[::-1]
+```
+
+```py
+palindrome('taco cat') # True
+```