# author:Iron Qi
product_list = [('Iphone',5800),
('Mac Pro',9800),
('Play Game',1000),
('Watch',4300),
('Basketball',260),
('cloth',1314)
]
shopping_list=[] #商品购物车是空表
salary = input("Input your salary:")
if salary.isdigit():
salary = int(salary)
while True:
for index,item in enumerate(product_list): # 取列表的下标和实际属性
print(index,item)
user_choice = input("Please select the item you want to buy:") # 选择的是商品编号
if user_choice.isdigit():
user_choice = int(user_choice)
if user_choice < len(product_list)and user_choice >=0:
p_price=product_list[user_choice]
if p_price[1] <= salary: #can buy
shopping_list.append(p_price)
salary -=p_price[1]
print("Added %s into shopping cart,your balance is \033[31;1m%s\033[0m" %(p_price,salary))
else:
print("\033[32;1myour balance only is[%s]，No longer available\033[0m"% salary)
else:
print("product code [%s] is not exist!"% user_choice)
elif user_choice =='q':
print("---------shopping list---------")
for p in shopping_list:
print(p)
print("your current balance:",salary)
exit()
else:
print("invalid option")
else:
print("\033[33;1mYour input is not valid\033[0m") #\033[33;1m----\033[0m 是用来高亮。
结果展示：
Input your salary:5000
0 ('Iphone', 5800)
1 ('Mac Pro', 9800)
2 ('Play Game', 1000)
3 ('Watch', 4300)
4 ('Basketball', 260)
5 ('cloth', 1314)
Please select the item you want to buy:4
Added ('Basketball', 260) into shopping cart,your balance is 4740
0 ('Iphone', 5800)
1 ('Mac Pro', 9800)
2 ('Play Game', 1000)
3 ('Watch', 4300)
4 ('Basketball', 260)
5 ('cloth', 1314)
Please select the item you want to buy:5
Added ('cloth', 1314) into shopping cart,your balance is 3426
0 ('Iphone', 5800)
1 ('Mac Pro', 9800)
2 ('Play Game', 1000)
3 ('Watch', 4300)
4 ('Basketball', 260)
5 ('cloth', 1314)
Please select the item you want to buy:q
---------shopping list---------
('Basketball', 260)
('cloth', 1314)
your current balance: 3426
0 ('Iphone', 5800)
1 ('Mac Pro', 9800)
2 ('Play Game', 1000)
3 ('Watch', 4300)
4 ('Basketball', 260)
5 ('cloth', 1314)
