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

title, tags, expertise, firstSeen, lastUpdated

title	tags	expertise	firstSeen	lastUpdated
String is anagram	string	intermediate	2018-10-01T13:17:29+03:00	2020-11-02T19:28:05+02:00

Checks if a string is an anagram of another string (case-insensitive, ignores spaces, punctuation and special characters).

• Use str.isalnum() to filter out non-alphanumeric characters, str.lower() to transform each character to lowercase.
• Use collections.Counter to count the resulting characters for each string and compare the results.

from collections import Counter

def is_anagram(s1, s2):
  return Counter(
    c.lower() for c in s1 if c.isalnum()
  ) == Counter(
    c.lower() for c in s2 if c.isalnum()
  )

is_anagram('#anagram', 'Nag a ram!')  # True