shopping car 1.0

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @File  : 20180510001.py
# @Author: Anthony.waa
# @Date  : 2018/5/10 0007
# @Desc  :

# 购物清单列表
goods = [
    {"name": "书籍", "price": 1999},
    {"name": "服装", "price": 10},
    {"name": "美女", "price": 20},
    {"name": "科技用品", "price": 998},
]

# 定义空购物车
shopping = []

# 显示购物清单
print("---欢迎登陆购物系统")
for goods_count, goods_all in enumerate(goods,1):
    print(goods_count, goods_all['name'], goods_all['price'])

# 循环购物流程
while True:

    # 输入总金额
    salary = input("请输入你当前总资产：").strip()
    if salary.isdigit():
        salary = int(salary)
    else:
        print("输入错误,请重新输入.")
        continue

    while True:
        # 选择购物商品，并加入购物清单
        choice = input("请选择你要购物的商品：").strip()
        goods_index = len(goods)

        if  choice.isdigit():
            choice = int(choice)

            # 判断输入选项不能小于元素长度
            if choice > 0 and choice <= goods_index:
                name_a = goods[choice - 1]['name']  # 单个商品名称
                price_a = goods[choice - 1]['price']  # 单个商品价格
                if salary > price_a:
                    if choice == 1:
                        shopping.append(name_a)
                        print('购买成功,当前购物车内有：', shopping, '剩余金额为：', salary)
                    elif choice == 2:
                        shopping.append(name_a)
                        print('购买成功当前购物车内有：', shopping, '剩余金额为：', salary)
                    elif choice == 3:
                        shopping.append(name_a)
                        print('购买成功当前购物车内有：', shopping, '剩余金额为：', salary)
                    elif choice == 4:
                        shopping.append(name_a)
                        print('购买成功当前购物车内有：', shopping, '剩余金额为：', salary)
                    else:
                        print('没有该类目,请重新输入')

                    salary -= price_a   # 剩余金额

                else:
                    print("余额不足，请充值。")
                    # 充值金额
                    salary_two = int(input("请输入充值金额："))
                    salary += salary_two
                    print("余额为：", salary)
                    continue
        elif choice.lower():
            if choice == 'q':
                print("欢迎下次再来,再见。")
                exit()
        else:
            print("输入非法,请重新输入.")
            continue