product_list = [
('iphone', 5000),
('mac Pro', 12000),
('bike', 800),
('book', 120),
('watch', 10600),
('coffee', 20)
]
shopping_list = []
salary = input("input you salary:")
if salary.isdigit():
salary = int(salary)
while True:
# for item in product_list:
# print(product_list.index(item), item)
for index, item in enumerate(product_list):
print(index, item)
user_choice = input("请输入想要买的商品序号：")
if user_choice.isdigit():
user_choice = int(user_choice)
if 0 <= user_choice < len(product_list):
p_item = product_list[user_choice]
if p_item[1] <= salary:
shopping_list.append(p_item)
salary -= p_item[1]
print("%s is added into your shopping_list,the current balance is \033[31;1m%s\033[0m" % (p_item[0], salary))
else:
print("\033[41;1m余额不足\033[0m")
else:
print("\033[41;1m商品不存在，请重新输入\033[0m")
elif user_choice == 'q':
print("--------shopping_list--------")
for p in shopping_list:
print(p)
print("your current salary:",salary)
exit()
else:
print("\033[41;1m invalid input\033[0m")
else:
print("\033[41;1m invalid input\033[0m")
