Tutorial Eva

tut.py

def occurrences(text1, text2):
  result = 0
  unique_characters = []
  # for every character in text1
  for character in text1:
    # check whether or not the character has been encountered before
    if character not in unique_characters:
      # if not, add that character to the list
      unique_characters.append(character)
      # for every character in text2
      for char in text2:
        if char == character:
          result += 1
  return result