#author:zhouyu
produce_list = [
('Watch',1000),
('Telephone',6500),
('Television',4500),
('refrigerate',2300),
('washer',680),
('compute',5500)
]
# ，
shopping_list = []
#
salary = input("Please input your salary: ")
#isdigit salary ， True
if salary.isdigit():
#
salary = int(salary)
while True:
# ，enumerate ， 。
for index,i in enumerate(produce_list):
print(index,i)
#
user_choose = input("Please input the number of what do you want: ")
if user_choose.isdigit():
user_choose = int(user_choose)
#len 。
if user_choose >= 0 and user_choose < len(produce_list):
# ，
p_item = produce_list[user_choose]
#
if p_item[1] <= salary:
# shopping_list
shopping_list.append(p_item)
# ，
salary -= p_item[1]
print("Add %s into shopping cart,and your balance is \033[31;1m%d\033[0m" %(p_item[0],salary))
#
else:
print("\033[41;1myour balance is not enough,get out there!!!\033[0m")
# 0 len(produce_list)
else:
print("\033[41;1mthe produce is not exists!!!\033[0m")
# q quit，
elif user_choose == 'q':
print("----------product list -----------")
for i in shopping_list:
print(i)
print("your balance is ", salary)
exit(1)
#
else:
print("Invali number !!!")