from random import randint
player1 = input("Enter player 1's name: ")
player2 = input("Enter player 2's name: ")
print("")
print("")
def menu():
    print("Welcome to this dice game.")
    print("What would you like to do first?")
    print("")
    print("A: Play!")
    print("B: Display rules")
    print("C: Quit :c")
    print("")
    valid = False
    while valid is False:
        choice = input("> ")
        choice = choice.lower()
        if choice == "a":
            valid = True
            game()
        elif choice == "b":
            valid = True
            rules()
        elif choice == "c":
            print("Cya")
            valid = True
            exit
        else:
            print("Enter valid response.")
            valid = False

def rules():
    print("These are the rules of the game. You must obey them!")
    print("Players take turns to throw two dice . If the throw is a double, i.e. two 2s, two 3s, etc., the player's score reverts to zero and their turn ends. If the throw is not a double, the total shown on the two dice is added to the players score. A player may have as many throws as they like in any turn until they either throw a double or pass the dice. The first player to reach a score of 50, wins the game.")
    print()
    menu()

def game():
    print("Welcome to the actual game! The fun begins now...")
    print("The first person to role will be " + str(player1) + ".")
    print()
    player1Count = 0
    player2Count = 0
    while player1Count < 50 and player2Count < 50:
        player1Go = True
        player2Go = False
        print("Press enter to role the dice. Or, type skip to turn the dice over to the over player.")
        print()
        while player1Go is True:
            print("Player: " + str(player1) + " Score: " + str(player1Count))
            x = input()
            x = x.lower()
            dice1 = randint(1,6)
            dice2 = randint(1,6)
            if x == "skip":
                player1Go = False
                player2Go = True
            elif dice1 != dice2:
                print("You rolled " + str(dice1) + " and " + str(dice2) + ".")
                player1Count = player1Count + (dice1 + dice2)
            elif dice1 == dice2:
                print("Unlucky! You got doubles, your score is now 0 and it is the other players go.")
                player1Go = False
                player2Go = True
        while player2Go is True:
            print("Player: " + str(player1) + " Score: " + str(player1Count))
            x = input()
            dice1 = randint(1,6)
            dice2 = randint(1,6)
            if x == "skip":
                player2Go = False
                player1Go = True
            elif dice1 != dice2:
                print("You rolled " + str(dice1) + " and " + str(dice2) + ".")
                player2Count = player2Count + (dice1 + dice2)
            elif dice1 == dice2:
                print("Unlucky! You got doubles, your score is now 0 and it is the other players go.")
                player2Go = False
                player1Go = True


menu()