'''4.要求用户输入总资产，例如：2000
显示商品列表，让用户根据序号选择商品，加入购物车
购买，如果商品总额大于总资产，提示账户余额不足，否则，购买成功。
附加：可充值、某商品移除购物车'''
# 变量的含义：
# sum是累计金额，car是购物车，asset是资产，balance是余额，choose是选择的商品编号，
# num是移除的商品数量
def fun1(dic):
print(dic)
sum = 0
car = {}
asset = int(input('Please enter your asset:'))
balance = asset
while True:
while True:
choose = int(input('Please choose the number that you want to buy:'))
goods = dic[choose]
if(car.__contains__(choose)):
car[choose] = [goods[0],goods[1],car[choose][2] + 1]
else:
car[choose] = [goods[0], goods[1], 1]
print(car)
sum += goods[1]
balance -= goods[1]
print('The remaining amount is {}'.format(balance))
isexit = input('Do you continue to buy?(Y/N) ').lower()
if isexit == 'y':
continue
elif isexit == 'n':
break
else:
print('Invalid input!')
while True:
if sum == 0:
print('The shopping cart is empty! ')
break
elif asset > sum:
print('Purchase success!')
sum = 0
asset = balance
car = {}
break
else:
re = input('Your balance isn\'t enough!Select (remove) some of goods or (recharge):')
if re == 'remove':
regoods = int(input('Please choose the number that you want to remove:'))
num = int(input('Please enter the number of removeing:'))
if (car.__contains__(regoods)):
if num <= car[regoods][2]:
sum -= car[regoods][1] * num
balance += car[regoods][1] * num
car[regoods][2] -= num
if num == car[regoods][2]:
del car[regoods]
print("累计购买金额{}，购物车{}，余额{}".format(sum, car, balance))
else:
print('移除数量超出范围！')
else:
print("The shopping cart don't have this goods!")
if re == 'recharge':
money = int(input('Please enter the amount of recharge:'))
asset += money
balance += money
print('The remaining amount is {}'.format(balance))
dic1 = {1:['荔枝',666],2:['牛油果',888],3:['奇异果',686],4:['榴莲',868]}
fun1(dic1)
