import random
#imports the random library
colours = ["R", "G", "B", "Y"]

a = random.choice(colours)
b = random.choice(colours)
c = random.choice(colours)
d = random.choice(colours)
print(a,b,c,d)
#this makes it so we can do opition2. eache letter variable represnts a letter from the list colours and since it is done seperatly we can get repeating letters.
while True:
    #we have a while loop here so that the user can keep doing unlimited guesses until they win
    correct_answer = 0
    wrong_spot = 0

    print("Please guess the 4 letter code using the letters RGBY")

    guess = input()
    guess1 = guess[0]
    guess2 = guess[1]
    guess3 = guess[2]
    guess4 = guess[3]
    #the user will be able to type the 4 letter code in one line and then the computer will individualize it.

    toCheckGuess = ""
    toCheckAnswer = ""


    if guess1 == a:
        correct_answer +=1
        #if the guess is correct then add it to corrects

    else:
        toCheckGuess += guess1
        toCheckAnswer += a
        #these variables hold the incorrect values to check later to see if they are just in the wrong spot

    if guess2 == b:
        correct_answer +=1

    else:
        toCheckGuess += guess2
        toCheckAnswer += b

    if guess3 == c:
        correct_answer +=1

    else:
        toCheckGuess += guess3
        toCheckAnswer += c

    if guess4 == d:
        correct_answer +=1

    else:
        toCheckGuess += guess4
        toCheckAnswer += d

    if correct_answer == 4:
        #if all 4 are correct then the code was guessed correctly and the loop is broken
        break


    #get a variable to check each letter
    for i in range(0, len(toCheckAnswer)):
       #while checking each one in toCheckAnswer, use j to check each letter in toCheckGuess
        for j in range(0, len(toCheckGuess)):
            #if the pair matches up then its in the wrong spot and can be added to wrong_spot
            if toCheckGuess[j] == toCheckAnswer[i]:
                wrong_spot = wrong_spot + 1
                #Change the characters that matched up in each string so it isnt checked again
                toCheckAnswer = toCheckAnswer[:i] + 'X' + toCheckAnswer[i+1:]
                toCheckGuess = toCheckGuess[:j] + 'O' + toCheckGuess[j+1:]

    print(correct_answer, "correct")
    print(wrong_spot, "correct letter in the wrong spot")