#Initializing random code
import random

def playGame():
    options = ["R", "G", "B", "W"]
    position1 = random.choice(options)
    position2 = random.choice(options)
    position3 = random.choice(options)
    position4 = random.choice(options)
    code = [position1, position2, position3, position4]
    backupCode = list(code)

    #Initializing results
    results = "cat"
    while results != "WWWW":
        backupCode = list(code)
       #Users input
        user = input("Guess: ")
        user = user.upper()
        user = list(user)
    #Comparing exact matches
        count = 0
        for i in range(4):
            if code[i] == user[i]:
                count = count + 1
                code[i] = "X"
                user[i] = "Z"
        whitePeg = count * "W"
    #Comparing semi-exact matches
        count = 0
        for i in range(4):
            if code[i] == user[0]:
                count = count + 1
                code[i] = "X"
                user[0] = "Z"
        blackPeg = count * "B"
        count = 0
        for i in range(4):
            if code[i] == user[1]:
                count = count + 1
                code[i] = "X"
                user[1] = "Z"
        blackPeg = blackPeg + (count * "B")
        count = 0
        for i in range(4):
            if code[i] == user[2]:
                count = count + 1
                code[i] = "X"
                user[2] = "Z"
        blackPeg = blackPeg + (count * "B")
        count = 0
        for i in range(4):
            if code[i] == user[3]:
                count = count + 1
                code[i] = "X"
                user[3] = "Z"
    #Final results
        blackPeg = blackPeg + (count * "B")
        results = (whitePeg + blackPeg)
        print(results)
        code = backupCode

    print("Congrats! You did it!")

def main():
    x = input("Do you want to play? Y/N? ")
    while x == "Y":
        playGame()
        x = input("Do you want to play again? Y/N? ")
    while x == "N":
        break
main()