def isWordGuessed(secretWord, lettersGuessed):
    '''
   secretWord: string, the word the user is guessing
   lettersGuessed: list, what letters have been guessed so far
   returns: boolean, True if all the letters of secretWord are in lettersGuessed;
     False otherwise
   '''
    # FILL IN YOUR CODE HERE...
    # FILL IN YOUR CODE HERE...
    for char in secretWord:
        if char not in lettersGuessed:
            return False
    return True


def getGuessedWord(secretWord, lettersGuessed):
    '''
   secretWord: string, the word the user is guessing
   lettersGuessed: list, what letters have been guessed so far
   returns: string, comprised of letters and underscores that represents
     what letters in secretWord have been guessed so far.
   '''
    # FILL IN YOUR CODE HERE...
    word = ''
    for char in secretWord:
        if char in lettersGuessed:
            word = word + char
        else:
            word = word + '_ '
    return word


def getAvailableLetters(lettersGuessed):
    '''
   lettersGuessed: list, what letters have been guessed so far
   returns: string, comprised of letters that represents what letters have not
     yet been guessed.
   '''
    # FILL IN YOUR CODE HERE...
    import string
    alphabet = string.ascii_lowercase
    remaining = alphabet
    for char in lettersGuessed:
        remaining = remaining.replace(char, '')

    ''.join(remaining)
    return remaining


def hangman(secretWord):
    '''
   secretWord: string, the secret word to guess.

   Starts up an interactive game of Hangman.

   * At the start of the game, let the user know how many
     letters the secretWord contains.

   * Ask the user to supply one guess (i.e. letter) per round.

   * The user should receive feedback immediately after each guess
     about whether their guess appears in the computers word.

   * After each round, you should also display to the user the
     partially guessed word so far, as well as letters that the
     user has not yet guessed.

   Follows the other limitations detailed in the problem write-up.
   '''
    # FILL IN YOUR CODE HERE...
    print("Welcome to the game Hangman!")
    print('I am thinking of a word that is ' + str(len(secretWord)) + ' letters long.')
    guesses = 8
    lettersGuessed = []
    while guesses < 0 or isWordGuessed(secretWord, lettersGuessed) == False:

        print("You have " + str(int(guesses)) + ' guesses left.')
        print(getAvailableLetters(lettersGuessed))
        g = input("Please guess a letter:").lower()
        if g in secretWord:
            lettersGuessed.append(g)
            print('Good guess: ' + getGuessedWord(secretWord, lettersGuessed))
            if isWordGuessed(secretWord, lettersGuessed) == True:
                return print('Congratulations, you won!')
                break
        elif g in lettersGuessed:
            print('Ooops! You have already guessed that letter: ' + getGuessedWord(secretWord, lettersGuessed))

        else:
            lettersGuessed.append(g)
            print('Ooops! That letter is not in my word:' + getGuessedWord(secretWord, lettersGuessed))
        guesses -= 1
        if guesses < 1:
          return print('Sorry, you ran out of guesses. The word was' , secretWord)
        if isWordGuessed == True:
          return print('Congratulations, you won!')

# When you've completed your hangman function, uncomment these two lines
# and run this file to test! (hint: you might want to pick your own
# secretWord while you're testing)

hangman('blue')