import random
gameInitiate = False
if gameInitiate == False:
    input('Press enter to start.')
    gameInitiate = True

def shellgame():
    print('Welcome to shell game.')
    print('I\'m going to put a shell under one of these cups.')
    print(' ,+.    ,+.    ,+.')
    print('//|\\  //|\\  //|\\')
    print('|||||  |||||  |||||')
    computerShell = random.randint(1, 3)
    userMoney = 100
    gamePlaying = True
    while gamePlaying == True:
        userBet = int(input('Would you like to place a bet? Enter how much.'))

        if userBet > userMoney:
            print('Sorry! You only have ' + str(userMoney) + '!')
        else:
            userMoney -= userBet
        userChoice = input('Type 1 2 or 3 to pick a cup.')
        if int(userChoice) == int(computerShell):
            userWinnings = userBet * 2
            print(computerShell)
            playAgain = input('Congratulations! You won! Play again?')
            if playAgain == ('Yes'):
                gamePlaying = True
            if playAgain == ('No'):
                print('Bye!')
                gamePlaying = False
        if int(userChoice) != int(computerShell):
            playAgain = input('Sorry! You lost. Play again?')
            if playAgain == ('Yes'):
                gamePlaying = True
            if playAgain == ('No'):
                print('Bye!')
                gamePlaying = False


shellgame()