Scrabble project: Nonetype

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1

Hi guys,

Anyone knows why I get this error:

Traceback (most recent call last):
File “scrabble.py”, line 29, in
player_points += score_word(word)
TypeError: unsupported operand type(s) for +=: ‘int’ and ‘NoneType’

My code looks like this

letters = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]
points = [1, 3, 3, 2, 1, 4, 2, 4, 1, 8, 5, 1, 3, 4, 1, 3, 10, 1, 1, 1, 1, 4, 4, 8, 4, 10]

letters_to_points = {key: value for key, value in zip(letters, points)}

# print(letters_to_points)

letters_to_points[" "] = 0

def score_word(word):
  point_total = 0
  for letter in word.upper():
    if letter in letters:
      point_total += letters_to_points.get(letter)
    else:
      point_total += 0
  print(point_total)

# score_word("house")


players_to_words = {"player1": ["BLUE", "TENNIS", "EXIT"], "wordNerd": ["EARTH", "EYES", "MACHINE"], "Lexi Con": ["ERASER", "BELLY", "HUSKY"], "Prof Reader": ["ZAP", "COMA", "PERIOD"]}

player_to_points = {}

for player, words in players_to_words.items():
  player_points = 0
  for word in words:
    player_points += score_word(word)
2 
player_points += score_word(word)

player_points is an integer (which you initialized to 0)
score_word is a function. In the code you posted, this function prints a value. You should return the value. If no value is returned, then the function returns None. Printing is NOT a form of returning.

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3

All clear! Thanks @mtrtmk :slight_smile:

1 Like