# Hangman
# One player chooses a category (e.g. Animals) and a secret word (e.g. rooster).
# Second player guesses a letter A-Z, all instances are revealed.
# If player guesses incorrectly 5 times, s/he loses.
# If all letters are guessed, player wins.
# Has some error-checking, and lots of comments. YOURS SHOULD TOO!
# Hope you're having fun, folks. -- Mr. G.

# Player 1 sets the category/word.
category = input("Category: ").upper()
secret = input("Secret word: ").upper()

# Setup: 'reveal' shows all letters correctly guessed, and dashes otherwise,
# while 'unguessed' starts with the original word, and replaces all correctly
# guessed letters with dashes.
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
reveal = "-"*len(secret)
unguessed = secret
guesses = 5

# Clear the screen, start the game.
for blankLine in range(50):
    print()
print("The category is {}".format(category))

# Run the game until either the player has 0 guesses remaining, or there are no
# unguessed letters in the revealed word.
while guesses > 0 and "-" in reveal:
    print("{}     Guesses remaining: {}     {}".format(reveal, guesses, alphabet))
    
    # Error-checking: make sure guess is a single unguessed letter.
    while True:
        letter = input("Guess a letter: ").upper()
        if len(letter) == 1 and letter.isalpha():
            if not letter in alphabet:
                print("You've already guessed {}.".format(letter))
            else:
                break
        else:
            print("Not a valid guess.")
    
    # Replace all instances in the revealed string with the guessed letter, if it
    # is a correct guess, and update the unguessed string with dashes.
    if letter in unguessed:
        while letter in unguessed:
            idx = unguessed.find(letter)
            reveal = reveal[:idx]+letter+reveal[idx+1:]
            unguessed = unguessed.replace(letter,"-",1)
    
    # Letter isn't in word. Deduct a guess.
    else:
        print("There is no {} in the secret word.".format(letter))
        guesses -= 1
    alphabet = alphabet.replace(letter, "-")

# End the game.
if "-" in reveal:
    print("You lose. \n")
else:
    print("You win! \n")
print("The secret word was {}.".format(secret))