# String is anagram

Canonical: https://www.wiki.jodisand.me/snippets/python/is_anagram/


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.

```py
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()
  )
```

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