salary = int(input("Please input your salary: ")) msg = ''' 1. iphone6s 5800 2. mac book 9000 3. coffee 32 4. python book 80 5. bicyle 1500 6. exit ''' cart = [] flag = True while flag: print(msg) tmp = int(input("what do you want to buy?")) if tmp == 1 and salary >= 5800: cart.append("iphone6s") salary = salary - 5800 print("your balance is still has %d" %salary) elif tmp == 2 and salary >= 9000: cart.append("mac book") salary = salary - 9000 print("your balance is still has %d" %salary) elif tmp == 3 and salary >= 32: cart.append("coffee") salary = salary - 32 print("your balance is still has %d" %salary) elif tmp == 4 and salary >= 80: cart.append("python book") salary = salary - 80 print("your balance is still has %d" %salary) elif tmp == 5 and salary >= 1500: cart.append("bicyle") salary = salary - 1500 print("your balance is still has %d" %salary) elif tmp == 6: flag = False else: print("You don't have enough money") else: print("Your shopping cart has", cart)