pset4-playingaHand.py

# PLAYING A HAND  

def playHand(hand, wordList, n):
    """
    Allows the user to play the given hand, as follows:

    * The hand is displayed.
    * The user may input a word or a single period (the string ".") 
      to indicate they're done playing
    * Invalid words are rejected, and a message is displayed asking
      the user to choose another word until they enter a valid word or "."
    * When a valid word is entered, it uses up letters from the hand.
    * After every valid word: the score for that word is displayed,
      the remaining letters in the hand are displayed, and the user
      is asked to input another word.
    * The sum of the word scores is displayed when the hand finishes.
    * The hand finishes when there are no more unused letters or the user
      inputs a "."

      hand: dictionary (string -> int)
      wordList: list of lowercase strings
      n: integer (HAND_SIZE; i.e., hand size required for additional points)
      
    """
    prompt="Enter word, or a \".\" to indicate that you are finished:"
    sum = 0
    while calculateHandlen(hand) > 0:
      print "Current Hand: ", displayHand(hand)
      word = raw_input(prompt)
      if word == "." :
         print "Goodbye! Total score:",sum, "points."
         break
      if isValidWord(word, hand, wordList) == False:
          print "Invalid word, please try again."
          continue
      points = getWordScore(word, n)
      sum = sum + points
      print "\"" + word + "\" earned",points, "points. Total:",sum,"points."
      hand = updateHand(hand, word)
    if calculateHandlen(hand) == 0: 
        print
        print "Run out of letters. Total score:",sum