old_contents: def find_anagrams(word, possible_anagrams):
      pass
  
new_contents: def find_anagrams(word, candidates):
      return [candidate for candidate in candidates if is_anagram(word, candidate)]
  
  # Anagram comparison is case insensitive
  def is_anagram(word, candidate):
      word_lowercase = word.lower()
      candidate_lowercase = candidate.lower()
      return (is_not_identical(word_lowercase, candidate_lowercase) and
              is_identical_when_sorted(word_lowercase, candidate_lowercase))
  
  def is_not_identical(word, candidate):
      return word != candidate
  
  def is_identical_when_sorted(word, candidate):
      return sorted(word) == sorted(candidate)
  
subject: Solve anagram