本文实例为大家分享了程序：Python购物车程序，具体内容如下
需求：
启动程序后，让用户输入工资，然后打印商品列表
允许用户根据商品编号购买商品
用户选择商品后，检测余额是否够，够就直接扣款，不够就提醒
可随时退出，退出时，打印已购买商品和余额
如余额不足，可充值
代码：
#coding=utf-8
#Version:python 3.6.0
#Tools:Pycharm 2017.3.2
_date_ = '2018/4/16/016 14:50'
_author_ = 'Hongyong'
salary = int(input("Please input your salary: "))
shoppingmart = []
items = (["1","Huawei","￥",2800],
["2","Earphone","￥",300],
["3","Book","￥",80])
msg_items = '''
----------items----------
1. Huawei ￥ 2800
2. Earphone ￥ 300
3. Book ￥ 80
-------------------------
'''
print(msg_items)
while True:
shopindex = int(input("Please choose goods: "))
if salary > items[shopindex-1][3]:
shoppingmart.append(items[shopindex-1])
salary -= int(items[shopindex-1][3])
print("You have bought {name} !".format(name = items[shopindex-1][1]))
print("Your balance is: ￥",salary)
decision = input("Do you want to quit now?")
print(msg_items)
else:
print("Your balance is not enough! Please try sth else.")
recharge_ans = input("Do you want to recharge?")
if recharge_ans == "y":
recharge = int(input("Please input money: "))
print("Please wait for a while...")
salary += recharge
print("You have recharged successfully!")
print("And the balance is: ",salary,"now!")
decision = input("Do you want to quit now?")
print(msg_items)
if decision == "q":
break
else:
continue
print("You have bought: ",shoppingmart)
print("Your balance is: ￥",salary)
print("Welcome your next coming!")程序效果：
Please input your salary: 0 ----------items---------- 1. Huawei ￥ 2800 2. Earphone ￥ 300 3. Book ￥ 80 ------------------------- Please choose goods: 1 Your balance is not enough! Please try sth else. Do you want to recharge?y Please input money: 30000 Please wait for a while... You have recharged successfully! And the balance is: 30000 now! Do you want to quit now? ----------items---------- 1. Huawei ￥ 2800 2. Earphone ￥ 300 3. Book ￥ 80 ------------------------- Please choose goods: 1 You have bought Huawei ! Your balance is: ￥ 27200 Do you want to quit now? ----------items---------- 1. Huawei ￥ 2800 2. Earphone ￥ 300 3. Book ￥ 80 ------------------------- Please choose goods: 2 You have bought Earphone ! Your balance is: ￥ 26900 Do you want to quit now?q ----------items---------- 1. Huawei ￥ 2800 2. Earphone ￥ 300 3. Book ￥ 80 ------------------------- You have bought: [['1', 'Huawei', '￥', 2800], ['2', 'Earphone', '￥', 300]] Your balance is: ￥ 26900 Welcome your next coming!