what would you tell me of this code?

gistfile1.py

#Function is called with a string
import collections

def isAnagramOfPalindrome(S):
    # Check length if length even then all need to be two
    # if not even there must be a -1
    
    dic = collections.defaultdict(int)
    for c in S:
        dic[c] += 1
        
    # Check even or not
    is_even = len(S) % 2
    
    odd = False
    for el in dic:
      if dic[el] %2 != 0:
        if not is_even:
          if not odd:
            return 0
          else:
            odd = True
    return 1