again = True
while again:

    import random
    Roll = random.randint(1,6)
    Total = 0

    print ("Main Menu:")
    print ("1) Play 1 Turn of Pig")
    print ("2) Simulate 10000 turns")

    Choice = input("Choice --> ")

    if Choice == '1':
        again = True
        while again:
            Roll = random.randint(1,6)
            if Roll != 1:
                print ("Roll:", Roll)
                Total += Roll
            if Roll == 1:
                print ("Roll:", Roll)
                print ("You rolled a 1. Score this turn: 0")
                again = False
            if Total > 20 or Total == 20:
                print ("Score this turn: ", Total)
                again = False

    elif Choice == '2':
        Counter = 0
        ZeroCount = 0
        RoundTotal = 0
        while again:
            again = True
            while again:
                Roll = random.randint(1,6)
                if Roll != 1:
                   Total += Roll
                   Counter =+ 1
                if Total >= 20:
                    RoundTotal = RoundTotal + Total
                if Roll == 1:
                    Counter = Counter + 1
                    ZeroCount = ZeroCount + 1
                if Counter >= 10000:
                    again = False
            Average = Counter/RoundTotal
            print(ZeroCount)
            print(Average)




    else:
        print ("\nYou were supposed to pick 1 or 2\nGame Over.\n")

    replay = input("Would you like to play again? Y or N ")
    if replay.lower() == 'n':
        again = False
    elif replay.lower() == 'y':
        again = True