product_list = [
('Iphone',5800),
('Mac Pro',9980),
('Bike',800),
('watch',10600),
('Coffee',31),
('AlexPython',80),
]
shop_list = []
salary = input("Please input your salary:")
if salary.isdigit():
salary = int(salary)
while True:
for index,item in enumerate(product_list):
#print(product_list.index(item),item)enumerate
print(index,item)
#break
user_choice = input ("选择要买什么")
if user_choice.isdigit():
user_choice=int(user_choice)
if user_choice <len(product_list)and user_choice>=0:
p_item = product_list[user_choice]
if p_item[1] <= salary:
shop_list.append(p_item)
salary -= p_item[1]
print("Added %s into shopping cart,your current balance is \033[31;1m%s\033[0m"%(p_item,salary))
else:
print("\033[42;1m你余额只剩[%s]；啦，还买个毛线啊\033[0m" % salary)
else:
print("product code [%s] is not exist !"% user_choice)
elif user_choice =='q':
print("---------------shopping list-----------")
for p in shop_list:
print(p)
print("Your current balance:",salary)
exit()
else:
print("invalid option")
