高亮显示提示
启动程序后，先登录，登录成功则让用户输入充值钱数,然后打印商品列表，失败则重新登录，超过三次则退出程序
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
# -*- coding:utf-8 -*-
dic = {'alex': {'password': 'qwer', 'count': 0, 'balance': 0},
'lilei': {'password': 'asdf', 'count': 0, 'balance': 0},
'jim': {'password': 'zxcv', 'count': 0, 'balance': 0}}
goods = [
{"name": "电脑", "price": 1999},
{"name": "鼠标", "price": 10},
{"name": "游艇", "price": 20},
{"name": "美女", "price": 998}, ]
shopping_cart = []
light_s = '\033[1;31;46m%s元\033[0m'
loop = True
while loop:
f = open(file='blacklist.txt', mode='r', encoding='utf-8')
blacklist = f.read()
f.closed
input_user = input('请输入您的用户名：').strip()
if input_user in blacklist:
print('很抱歉您的账户已被锁定')
else:
if input_user in dic:
input_password = input('请输入您的密码：').strip()
if input_password == dic[input_user]['password']:
print('登录成功，您的账户余额还有', light_s % (dic[input_user]['balance']))
recharge = input('是否进行充值？请输入充值的钱数，回车键继续')
if recharge.isdigit():
recharge = int(recharge)
dic[input_user]['balance'] += int(recharge)
print('当前余额为:', light_s % (dic[input_user]['balance']))
print('商品列表'.center(50, '-'))
print('-序号-', '商品'.center(4, '-'), '价格'.center(4, '-'))
while loop:
for index, i in enumerate(goods):
print(' %s %s %s ' % (index, i['name'], i['price']))
choice = input("请输入您要购买的商品序号,按'q'键退出")
if choice.isdigit():
choice = int(choice)
if choice >= len(goods):
print('\033[1;31;46m您所选择的商品不存在\033[0m')
continue
if dic[input_user]['balance'] >= int(goods[choice]['price']):
dic[input_user]['balance'] -= int(goods[choice]['price'])
print('购买成功，花费', light_s % (goods[choice]['price']), '余额还剩',
light_s % dic[input_user]['balance'])
shopping_cart.append(goods[choice])
else:
print('余额不足，您的账户余额还有', light_s % (dic[input_user]['balance']))
recharge = input('是否进行充值？请输入充值的钱数，回车键继续')
if recharge.isdigit():
recharge = int(recharge)
dic[input_user]['balance'] += int(recharge)
print('当前余额为:', light_s % (dic[input_user]['balance']))
elif choice == 'q':
print('您购买的商品列表清单如下')
for i in shopping_cart:
print(i['name'], i['price'])
print('\033[1;31;46m欢迎再来\033[0m')
loop = False
else:
print('\033[1;31;46m请输入正确的序号\033[0m')
else:
print('\033[1;31;46m密码错误\033[0m')
dic[input_user]['count'] += 1
if dic[input_user]['count'] > 2:
f = open(file='blacklist.txt', mode='a', encoding='utf-8')
f.write('%s ' % input_user)
print('\033[1;31;46ml您的账号已被加入黑名单\033[0m')
f.closed
break
else:
print('您输入的用户名不存在')