python 练习4

题目为信用卡消费管理系统：

主程序：main.py

#!usr/bin/env python
# encoding: utf-8
import conf,sys,time,re,os
import json
import login
tmp_dic = {}

def shopping_center(arg):
    print('33[32mWelcome into Credit card store!33[0m')
    while True:
        for i,(k,v) in enumerate(conf.shop_list.items(),1):
            print('%s.%s:%s'%(i,k,v))
        N = int(input('Please select you want to buy goods(input r:return p:pay):').strip())
        if N == 7:
            print('33[31myou will return main list!33[0m')
            time.sleep(1)
            tmp_dic.clear()#返回后如果没有支付则清空购物车
            break

        elif N in range(1,len(conf.shop_list)-1):
            key = list(conf.shop_list.items())[N - 1][0]
            value = list(conf.shop_list.items())[N - 1][1]
            if key in tmp_dic.keys():
                tmp_dic[key] = tmp_dic[key] + value
            else:
                tmp_dic[key] = value
            print('33[35mYour shopping cart is as follows:33[0m')
            for x,y in tmp_dic.items():
                print('33[35m%-5s:%s33[0m'%(x,y))
        elif N == 8:
            print('33[33mThe total order for you:%s33[0m'%sum(tmp_dic.values()))
            sum_values = sum(tmp_dic.values())
            with open('account.json','r') as f:
                acc = json.load(f)
            if sum_values > acc[arg][2]:
                print('对不起你的信用卡额度不足，请重新购买！！')
                login.log_record(arg, '消费', sum_values, 'fail')
                tmp_dic.clear()
                break
            else:
                acc[arg][2] = acc[arg][2] - sum_values
                acc[arg][3] = acc[arg][3] + sum_values
                with open('account.json','w') as z:
                    json.dump(acc,z)
                login.log_record(arg,'消费',sum_values,'success')
                print('恭喜你购物成功即将返回主菜单！！')
                time.sleep(1)
                tmp_dic.clear()
                break

#信用卡管理
def card_center(name):
    if name == 'admin':
        print('欢迎%s进入信用卡管理系统'%name)
        while True:
            for index,i in enumerate(conf.ad_list,1):
                print('%s.%s' %(index,i))
            p = int(input('请选择你要的操作的编号:').strip())
            with open('account.json', 'r+') as f:
                acc = json.load(f)
            if p == 1:#添加用户
                key = input('请输入你的用户名:').strip()
                pawd = input('请输入密码:').strip()
                paws = input('请输入支付密码:').strip()
                acc[key] = [pawd, paws, 15000,0, "unlock"]
                with open('account.json', 'w') as x:
                    json.dump(acc,x)
                print('用户%s已经添加成功额度为15000'%key)

            elif p == 2:#用户额度调整
                n = input('你的账号:')
                limit = int(input('请输入你要的额度:').strip())
                if n in acc.keys():
                    acc[n][2] = limit
                    with open('account.json','w') as y:
                        json.dump(acc,y)
                    continue
            elif p == 3:#冻结账户
                freeze = input('请输入你要冻结的账户:').strip()
                acc[freeze][3] = "lock"
                with open('account.json', 'w') as z:
                    json.dump(acc, z)
                print('账号%s已冻结'%freeze)
                continue
            elif p == 4:#解冻账户
                unfreeze = input('请输入你要解冻的账户:')
                acc[unfreeze][3] = "unlock"
                with open('account.json','w') as g:
                    json.dump(acc,g)
                print('账户%s已解冻'%unfreeze)
                continue
            elif p == 5:#用户操作查询
                pass
                continue
            elif p == 6:#返回主菜单
                break
    else:#消费者信用卡管理系统
        print('33[34m欢迎进入消费者信用卡管理系统!33[0m')
        with open('account.json', 'r+') as e:
            acc1 = json.load(e)
        while True:
            for l,i in enumerate(conf.customer_list,1):
                print('%s.%s'%(l,i))
            custom_in = int(input('请选择你需要的操作:').strip())
            if custom_in == 1:
                print('#' * 20)
                print('账户:%s
额度:%s
待还款:%s' %(name,acc1[name][2],acc1[name][3]))
                print('#' * 20)
                continue
            elif custom_in == 2:
                print('你的还款额:%s'%acc1[name][3])
                huank = int(input('你要还多少:').strip())
                acc1[name][2] = acc1[name][2] + huank
                acc1[name][3] = acc1[name][3] - huank
                with open('account.json', 'w') as g:
                    json.dump(acc1, g)
                print('恭喜你还款成功！')
                continue
            elif custom_in == 3:
                qukuan = int(input('请输入你要取款的金额:').strip())
                acc1[name][2] = acc1[name][2] - qukuan
                acc1[name][3] = acc1[name][3] + qukuan
                with open('account.json', 'w') as h:
                    json.dump(acc1, h)
                continue
            elif custom_in == 4:
                print('你的消费记录如下')
                ff = open('record.log','r')
                for line in ff:
                    if name in line:
                        print(line)
                ff.close()
                print('-'*20)
                continue
            elif custom_in == 5:
                while True:
                    pa = input('请输入你要转账的账户:').strip()
                    pc = int(input('请输入你要转账的金额:').strip())
                    if pa not in acc1.keys():
                        print('你输入的账户不存在，请重新输入！')
                        continue
                    elif pc > acc1[name][2]:
                        print('你的转账额度不够,请重新输入！')
                        continue
                    else:
                        break
                acc1[pa][3] = acc1[pa][3] - pc
                acc1[pa][2] = acc1[pa][2] + pc
                acc1[name][2] = acc1[name][2] - pc
                acc1[name][3] = acc1[name][3] + pc
                with open('account.json','w') as dd:
                    json.dump(acc1,dd)
                print('恭喜你转账成功！')
                continue
            elif custom_in == 6:
                break
            else:
                print('你选择的编号不对，请重新输入！！')
                continue


if __name__ == "__main__":
    while True:
        print('33[32mWelcome into credit card store!!!33[0m')
        for index,i in enumerate(conf.main_list,1):
            print('%s.%s'%(index,i))
        Num = input('Please choose you to enter the system(input b exit):').strip()
        if Num == 'b':
            print(1)
            sys.exit()
        elif int(Num) == 1:
            name1 = login.login()
            card_center(name1)
            continue
        elif int(Num) == 2:
            name = login.login()
            shopping_center(name)
            continue

配置文件：conf.py

#!usr/bin/env python
# encoding: utf-8
main_list = ['Credit card supervise','Credit card store']

shop_list = {'Car':100000,
             'Iphone':5000,
             'Mac Book':8000,
             'pan':10,
             'T-shirt':100,
             'coffee':30,
             'return':'返回主菜单',
             'pay':'买单',
             }

ad_list = ['添加用户','用户额度调整','冻结账户','解冻账户','用户操作查询','返回上一级']
customer_list = ['账户查询','还款','提现','消费查询','转账','返回']

 登录系统和日志系统：login.py

#!usr/bin/env python
# encoding: utf-8

import json,sys,time
# account = {'wyh':['a123',123,15000,'unlock'],
#            'bat':['b321',456,15000,'unlock'],
#            'admin':['admin',0,0,'unlock']}
# with open('account.json','w') as d:
#     json.dump(account,d)
logfile = 'record.log'

def login():
    with open('account.json', 'r') as f:
        acc = json.load(f)
    i = 0
    while True:
        name = input('请输入账号:')
        password = input('请输入密码:')
        if acc[name][3] == 'lock':
            print('你的账户被锁定请联系你的客户经理！！！')
            sys.exit()
        elif name not in acc.keys() or password != acc[name][0] :
            print('你的账户信息请重新输入！！！')
            i += 1
            if i > 2:
                print('你的账户被锁定请联系你的客户经理确认你的账户安全！！')
                acc[name][3] = 'lock'
                with open('account.json', 'w') as f1:
                    json.dump(acc, f1)
                sys.exit()
            continue
        else:
            print('欢迎%s'%name)
            return name

def log_record(name,Status,money,description='Null'):
    date = time.strftime("%Y%m%d %H:%M:%S", time.localtime())
    record_line = "%s  %s   %s  %s  %s
" % (date, name, Status,money, description)
    f = open(logfile, 'a')
    f.write(record_line)
    f.flush()
    f.close()

 账号文件：account.json

{"wyh": ["a123", 123, 14870, 100, "unlock"], "bat": ["b321", 456, 10070, 4930, "unlock"], "admin": ["admin", 0, 0, 0, "unlock"]}