My solution to the Codecademy Pro Project “Scrabble”. The code includes three key functions: one to score a given word, one to keep track of player scores, and another to update played words for a given player.

```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]
letter_to_points = {letter:point for letter, point in zip(letters,points)}
#add lower case letter point values
letter_to_points.update({letter.lower():point for letter, point in zip(letters, points)})
letter_to_points[' '] = 0

#Establish the score of a given word
def score_word (word):
point_total = 0
for letter in word:
point_total += letter_to_points.get(letter, 0)
return point_total

#brownie_points = score_word('BROWNIE')
#print(brownie_points)

#test game in progress
player_to_words = {'player1': ['BLUE', 'TENNIS', 'EXIT'], 'wordNerd': ['EARTH', 'EYES', 'MACHINE'], 'Lexi Con': ['ERASER', 'BELLY', 'HUSKY'], 'Prof Reader': ['ZAP', 'COMA', 'PERIOD']}

player_to_points = {}

#function to update and print current scores by player
def update_point_totals():
for player, words in player_to_words.items():
player_points = 0
for word in words:
player_points += score_word(word)
player_to_points[player] = player_points
print(player_to_points)

#function to add word to list of words played by a player
def play_word(player, word):
player_to_words[player].append(word)
return

#test lines to represent playing a word
#update_point_totals()
#play_word('player1', 'test')
#update_point_totals()
```