game_finish.py

import random

coin = 0  # global variable,


def SaveFile():
    global coin
    game_file = open('gamedata.txt', 'w')  # w - write (override) , a - append
    game_file.write('\n'+str(coin))  # str - string - text
    game_file.close()


def LoadFile():
    global coin
    game_file = open('gamedata.txt', 'r')  # r - read only
    data = game_file.read().rstrip()
    coin = eval(data)
    game_file.close()
    Game()
# Program Start Here


def Menu():
    global coin
    coin = eval(input('how much coin?: '))
    while (1):
        print('0-Exit')
        print('1-Play Game')
        print('2-Save Game')
        print('3-Load saved Game')
        ans = input('please enter your choice: ')
        if ans == '0':
            exit()
        elif ans == '1':
            print('Playing Game now...')
            Game()
        elif ans == '2':
            print('Saving now....')
            SaveFile()
        elif ans == '3':
            print('Loading Game...')
            LoadFile()
        else:
            print('Wrong choice, only (0,1,2), please try again: ')


def Game():
    global coin
    print(f'\n\nYou have {coin} coins')
    bet = eval(input('how much coin to bet: '))

    if bet > coin:
        bet = coin
        print('you cannot bet more than you have')
        print(f'your bet become: {bet}')

    input('press ENTER to roll the dice for PLAYER: ')
    player = random.randint(1, 6)
    print(f'your number is : {player}')

    input('press ENTER to roll the dice for COMPUTER: ')
    computer = random.randint(1, 6)
    print(f'computer number is : {computer}')

    if computer > player:
        coin = coin - bet
        print('Computer wins')
        print(f'Your coin is: {coin}')
        if coin == 0:
            ans1 = input('you lost everything! want to buy more coin: y\\n: ')
            if ans1 == 'y':
                coin = eval(input('how much coin?: '))
            else:
                print('No money: No more game! Bye bye')
                exit()

    elif player > computer:
        coin = coin + bet
        print('Player wins')
        print(f'Your coin is: {coin}')

    else:
        print('Draw')
        print(f'Your coin is: {coin}')


# Program Start Here
Menu()