注意:下面的程序和上一遍中的流程有点区别!


数据库设置:

mysql> desc back_card;   ##信用卡表结构!
+--------------+--------------+------+-----+---------+-------+
| Field        | Type         | Null | Key | Default | Extra |
+--------------+--------------+------+-----+---------+-------+
| card_id      | int(10)      | NO   | PRI | NULL    |       |
| card_passwd  | varchar(128) | NO   |     | NULL    |       |
| card_user    | varchar(64)  | YES  |     | NULL    |       |
| card_balance | float        | YES  |     | NULL    |       |
| create_time  | datetime     | YES  |     | NULL    |       |
| login_time   | datetime     | YES  |     | NULL    |       |
| err_time     | datetime     | YES  |     | NULL    |       |
+--------------+--------------+------+-----+---------+-------+
7 rows in set (0.01 sec)

mysql> desc item_list;  ##商品表结构
+------------+--------------+------+-----+---------+----------------+
| Field      | Type         | Null | Key | Default | Extra          |
+------------+--------------+------+-----+---------+----------------+
| item_id    | int(11)      | NO   | PRI | NULL    | auto_increment |
| item_name  | varchar(256) | YES  |     | NULL    |                |
| item_price | float        | YES  |     | NULL    |                |
| item_total | float        | YES  |     | NULL    |                |
| up_time    | datetime     | YES  |     | NULL    |                |
+------------+--------------+------+-----+---------+----------------+
5 rows in set (0.02 sec)

mysql>



Python atm程序 v1

################main.py      ##程序入口文件
#!/usr/bin/python
# -*- coding: utf-8 -*-

__author__ = 'gaogd'

import atm_login
import atm_main

def SelectFunction():
    content=u'''

    1.登陆信用卡
    2.申请信用卡
    3.修改信用卡密码
    4.删除信用卡

    '''
    print content

    num = raw_input(u'请输入您的选择:')

    if num.strip() == '1':
        Flag = True
        Flag,card_id = atm.Login()
        while Flag:
            Flag = atm_main.atm_choose(card_id)
            #atm.elect(card_id)
        return True

    if num.strip() == '2':
        atm.Register()
        return True

    if num.strip() == '3':
        atm.UpdatePasswd()
        return True

    if num.strip() == '4':
        atm.Deleuser()
        return True

    print u'您的输入有误!!请输入您需要的功能对应的序号'


if __name__ == "__main__":
    atm = atm_login.ATM()
    #atm.Register()
    #atm.Login()
    #atm.Deleuser()
    SelectFunction()


#######atm_main.py
#!/usr/bin/python
# -*- coding: utf-8 -*-

__author__ = 'gaogd'
import atm_login
import shooping


def atm_choose(card_id):
    choose_item = u"""
    1.  查询
    2.  消费
    3.  存取转账
    4.  修改账户密码
    5.  退出
    """
    print choose_item

    choose_item_num = raw_input(u"请输入的想要的操作:")
    if choose_item_num.strip() == '1':
        '''
        查询
        '''
        Flag = True
        while Flag:
            atm = atm_login.ATM()
            Flag = atm.Select(card_id)

        return True

    if choose_item_num.strip() == '2':
        '''
        消费
        '''
        Flag = True
        while Flag:
            shoop = shooping.Shoop()
            Flag = shoop.shooping(card_id)
            print Flag


        return True

    if choose_item_num.strip() == '3':
        '''
        存取转款

        '''

        atm = atm_login.ATM()
        Flag = True
        while Flag:
            Flag = atm.PutGetMoney(card_id)

        return True


    if choose_item_num.strip() == '4':
        '''
        修改密码
        '''
        atm = atm_login.ATM()
        atm.UpdatePasswd()
        return True


    if choose_item_num.strip() == '5':
        '''
        退出
        '''
        return False


    print u'您的输入有误!!请输入您需要的功能对应的序号,请重新输入!!'
    return True



##################atm_login.py
#!/usr/bin/python
# -*- coding: utf-8 -*-

__author__ = 'gaogd'

import  datetime
import MySQLdb as mysql
import atm_select
import atm_main


class ATM(object):
    def __init__(self):
        self.db = mysql.connect(user="root", passwd="wdzj@2015", db="ATM", host="192.168.10.12")  # 数据库连接信息
        self.db.autocommit(True)
        self.cur = self.db.cursor()
        self.cur.execute('set names utf8')


    def Login(self):
        # addtime = datetime.datetime.now().__format__("%Y-%m-%d %H:%M:%S")
        addtime = datetime.datetime.now()
        self.card_id = raw_input(u'请输入你的银行卡号:')
        err_count = 0
        Flag = True

        while Flag:
            self.password = raw_input(u'请输入密码:')
            if self.card_id.strip() == '':
                print  u'银行卡号不能为空!'
                Flag = False
                return Flag
            if not self.card_id.isdigit():
                print  u'用户卡号必须为数字!'
                Flag = False
                return Flag

            if self.password.strip() == '':
                print  u'密码不能为空!'
                Flag = False
                return Flag

            ## select err_time  from loginuser where user='xiaoming';
            get_err_time_sql = "select err_time  from back_card where card_id='%s';" % self.card_id
            self.cur.execute(get_err_time_sql)
            get_err_time = self.cur.fetchall()

            if len(get_err_time) == 0:   ## 卡号不存在
                print u'输入的用户卡或密码错误'
                Flag = False
                return Flag

            print '1------',get_err_time
            print '2------',get_err_time[0][0]
            if get_err_time[0][0] == None:
                print 'ok pass'
                #pass
            else:
                print 'get_err_time::', get_err_time[0][0], '=======', addtime
                err_time = get_err_time[0][0]
                diff_time = (addtime - err_time).seconds
                print 'diff_time::', diff_time

                if not diff_time >= 100:
                    Flag = False

            if Flag:

                # sql = select user,passwd from loginuser where user='gao3'and passwd='gao3';
                select_user_passwd_sql = "select card_id,card_user,card_passwd from back_card where card_id=%s and card_passwd='%s';" % (self.card_id, self.password)
                #print select_user_passwd_sql
                self.cur.execute(select_user_passwd_sql)
                select_user_passwd = self.cur.fetchall()

                if len(select_user_passwd) == 0:
                    print u'用户名或密码不正确!!'
                    err_count += 1
                    if err_count == 3:
                        print u'错误输入密码超过三次,程序自动退出!!'
                        ##sql = update loginuser set err_time='2016-09-02 15:40:01' where user='gao1' ;
                        update_err_sql = "update back_card set err_time='%s' where card_id=%s " % (addtime, self.card_id)

                        self.cur.execute(update_err_sql)
                        Flag = False
                else:
                    err_count = 0
                    self.card_user = select_user_passwd[0][1]
                    ##sql = update loginuser set login_time='2016-09-02 15:40:01' where user='gao1' ;
                    update_login_sql = "update back_card set login_time='%s' where card_id='%s' " % (addtime, self.card_id)
                    self.cur.execute(update_login_sql)
                    print u'欢迎%s您来到中国银行网上银行!!' % self.card_user
                    #atm_main.atm_choose()
                    return True,self.card_id
            else:
                print u'%s在5分钟登陆错误超过3次,请三十分钟后登陆!!' % self.card_id


    def Register(self):
        username = raw_input(u'请输入你要申请的用户名:')
        password_one = raw_input(u'请输入密码:')
        password_two = raw_input(u'请再次输入密码:')
        addtime = datetime.datetime.now()

        if username.strip() == '':
            print  u'用户名不能为空!'

        if not username.isalnum():
            print u'用户名不能包含特殊字符'
            return False

        if password_one.strip() == '':
            print  u'密码不能为空!'
            return False

        if not password_one.strip() == password_two.strip():
            print u'你两次输入的密码不一致'
            return False

        ##生成银行卡号
        ##select * from back_card  ORDER BY card_id desc limit 1;
        card_last_id_sql = "select * from back_card  ORDER BY card_id desc limit 1;"
        self.cur.execute(card_last_id_sql)
        card_last_id = self.cur.fetchall()[0][0]
        card_id = int(card_last_id) + 1

        ##  insert into back_card(card_id,card_passwd,card_user,card_balance,create_time) values(999990001,'asdasd','gao',0.0,addtime);
        create_card_sql = "insert into back_card(card_id,card_passwd,card_user,card_balance,create_time) values(%s,'%s','%s',0.0,'%s');" % (card_id,password_one,username,addtime)
        try:
            print create_card_sql
            self.cur.execute(create_card_sql)
        except Exception as e:
            print e
            print u'创建用户失败!!'
            return False
        print u'创建用户成功:', username


    def UpdatePasswd(self):
        '''
        修改信用卡密码
        '''
        card_id = raw_input(u'请输入你要修改密码的卡号: ')
        username = raw_input(u'请输入用户名: ')
        password = raw_input(u'请输入密码: ')
        new_passwd = raw_input(u'请输入你的新密码: ')
        new_passwd_two = raw_input(u'请输入你的新密码: ')

        if username.strip() == '':
            print  u'输入的用户名不能为空!'
            return False

        if card_id.strip() == '':
            print  u'信用卡号不能为空!'
            return False

        if not card_id.isdigit():
            print  u'信用卡号输入有误,卡号只能是数字!'
            return False

        if not new_passwd.strip() == new_passwd_two.strip():
            print u'您两次输入的新密码不一致,请重新输入!'
            return False


        # select card_id,card_passwd from back_card where card_id=999990005 and card_user='gao3'and card_passwd='gao33' ;
        select_card_passwd_sql = "select card_id,card_passwd from back_card where card_id=%s and card_user='%s'and card_passwd='%s' ;" % (
        card_id, username, password)
        # print select_card_passwd_sql
        self.cur.execute(select_card_passwd_sql)
        select_card_passwd = self.cur.fetchall()
        # print select_card_passwd,'lend2',len(select_card_passwd)

        if len(select_card_passwd) == 0:
            print u'用户名或密码不正确!!'
            return False

        else:
            ##修改密码
            ##update back_card set card_passwd='okokok' where card_id=999990001;
            select_updatepasswd_sql = " update back_card set card_passwd='%s' where card_id=%s  ;" % (new_passwd,card_id)
            #print select_updatepasswd_sql
            self.cur.execute(select_updatepasswd_sql)
            print u'用户%s 密码已经修改成功!!!' % username


    def Deleuser(self):
        card_id = raw_input(u'请输入你要删除的卡号:')
        username = raw_input(u'请输入你要删除的用户名:')
        password = raw_input(u'请输入密码:')

        if username.strip() == '' :
            print  u'输入的用户名不能为空!'
            return False

        if card_id.strip() == '':
            print  u'银行卡不能为空!'
            return False

        if not card_id.isdigit():
            print  u'信用卡号输入有误,卡号只能是数字!'
            return False

        # select card_id,card_passwd from back_card where card_id=999990005 and card_user='gao3'and card_passwd='gao33' ;
        select_card_passwd_sql = "select card_id,card_passwd from back_card where card_id=%s and card_user='%s'and card_passwd='%s' ;" % (card_id,username,password)
        #print select_card_passwd_sql
        self.cur.execute(select_card_passwd_sql)
        select_card_passwd = self.cur.fetchall()
        #print select_card_passwd,'lend2',len(select_card_passwd)

        if len(select_card_passwd) == 0:
           print u'用户名或密码不正确!!'
           return False

        else:
            if password.strip() == select_card_passwd[0][1].strip():
                ##删除用户
                ##DELETE FROM loginuser  WHERE user='gao1';
                select_deluser_sql = "DELETE FROM back_card  where card_id=%s and card_user='%s' ;" % (card_id,username)
                self.cur.execute(select_deluser_sql)
                print u'已经成功删除%s用户' % username



    def Select(self,card_id):
        select_content = u'''

        1.查询余额
        2.查询消费记录
        3.退出查询

        '''
        print  select_content
        select_content_num = raw_input(u'输入你要查询的项目:')

        if select_content_num.strip() == '1':
            #print 'card_id:::',card_id
            #select card_balance from back_card where card_id=999990004 ;

            card_balance_sql = "select card_balance from back_card where card_id=%s ;" % card_id
            #print card_balance_sql
            self.cur.execute(card_balance_sql)
            self.card_balance = self.cur.fetchall()
            print u'您的余额是::', self.card_balance[0][0]

            return True

        if select_content_num.strip() == '2':




            return True

        if select_content_num.strip() == '3':

            return False


        print u'您的输入有误,请重新输入!!'
        return True




    def PutGetMoney(self,card_id):
        put_get_item = u'''

        1. 存钱
        2. 取钱
        3. 转账
        4. 退出存取转款

        '''
        print put_get_item
        put_get_item_num = raw_input(u'输入你要查询的项目:')

        ## 查现在的存款
        card_balance_sql = "select card_balance from back_card where card_id=%s ;" % card_id
        self.cur.execute(card_balance_sql)
        self.card_balance = self.cur.fetchall()
        print u'您的余额是::', self.card_balance[0][0]

        if put_get_item_num.strip() == '1':
            '''
            存钱
            '''

            put_money = raw_input(u'请您输入要存的款额: ')   ##这里日后还可以添加输入小数的
            if not put_money.isdigit():
                print u'您的输入的存款有误!必须输入整数!!'
                return True

            new_money = float(put_money) + float(self.card_balance[0][0])
            # update back_card set card_balance=610 where card_id=999990004  ;
            put_money_sql = "update back_card set card_balance=%s where card_id=%s ;" % (new_money,card_id)
            self.cur.execute(put_money_sql)
            print u'已成功帮您存入%s元,您现在的余额是%s元!!' %(put_money,new_money)
            return True

        if put_get_item_num.strip() == '2':
            '''
            取钱
            '''
            get_money = raw_input(u'请您输入要存的款额: ')   ##这里日后还可以添加输入小数的
            if not get_money.isdigit():
                print u'您的输入的取款有误!必须输入整数哦!!'
                return True

            new_money = float(self.card_balance[0][0]) - float(get_money)

            if new_money < 0:
                print u'您的输入的余额不足%s元,无法为您取款!!' % get_money
                return True

            put_money_sql = "update back_card set card_balance=%s where card_id=%s ;" % (new_money,card_id)
            self.cur.execute(put_money_sql)
            print u'已成功帮您取出%s元,您现在的余额是%s元!!' %(get_money,new_money)
            return True

        if put_get_item_num.strip() == '3':
            '''
            转账
            '''
            tranfer_money = raw_input(u'请您输入要存的款额: ')   ##这里日后还可以添加输入小数的
            tranfer_card_id = raw_input(u'请您输入转到目的卡号: ')
            tranfer_card_user = raw_input(u'请您输入转到目的卡的用户名: ')
            if not tranfer_money.isdigit():
                print u'您的输入的转款有误!必须输入整数哦!!'
                return True

            new_my_money = float(self.card_balance[0][0]) - float(tranfer_money)
            if new_my_money < 0:
                print u'您的输入的余额不足%s元,无法为您转账!!' % tranfer_money
                return True

            if not tranfer_card_id.strip().isdigit():
                print u'您的输入的目的卡号%s不正确,应为数字!!' % tranfer_card_id
                return True

            if not tranfer_card_user.strip().isalpha():
                print u'您的输入的目的用户%s不正确,应为字母!!' % tranfer_card_id
                return True



            ##
            # select * from back_card where card_id=999990003 and card_user='gao1' ;
            select_tranfer_card_user_sql = "select card_balance from back_card where card_id=%s and card_user='%s' ;" %(tranfer_card_id,tranfer_card_user)
            print select_tranfer_card_user_sql
            self.cur.execute(select_tranfer_card_user_sql)
            peer_money = self.cur.fetchall()
            if  len(peer_money) == 0:
                print u'您输入的目的卡号或用户名不一致,无法为您转账'
                return True

            #本卡操作
            put_money_sql = "update back_card set card_balance=%s where card_id=%s ;" % (new_my_money,card_id)
            self.cur.execute(put_money_sql)

            #目的卡操作
            peer_old_money = peer_money[0][0]
            new_peer_money = float(peer_old_money) + float(tranfer_money)
            get_money_sql = "update back_card set card_balance=%s where card_id=%s ;" % (new_peer_money,tranfer_card_id)
            print get_money_sql
            self.cur.execute(get_money_sql)
            print u'已经成功为您转账%s元,到%s账户上!您现在的余额是%s元' %(tranfer_money,tranfer_card_user,new_my_money)

            return True





        if put_get_item_num.strip() == '4':

           return False



        print u'您输入的序号有误!'
        return True




#################shooping.py
#!/usr/bin/python
# -*- coding: utf-8 -*-

__author__ = 'gaogd'
import MySQLdb as mysql
import datetime


class Shoop(object):
    def __init__(self):
        self.db = mysql.connect(user="root", passwd="wdzj@2015", db="ATM", host="192.168.10.12")  # 数据库连接信息
        self.db.autocommit(True)
        self.cur = self.db.cursor()
        self.cur.execute('set names utf8')
        self.addtime = datetime.datetime.now()



    def add_goods(self):
        self.goods_item = raw_input(u'请输入商店出售的新商品名称: ').strip()
        goods_price = raw_input(u'请输入商店出售的新商品单价: ').strip()
        self.goods_total = raw_input(u'请输入商店出售的新商品总数: ').strip()



        if self.goods_item == '':
            print  u'商品名称不能为空!'
            Flag = False
            return Flag
        if not self.goods_total.isdigit():
            print  u'商品名称总量必须为整数!'
            Flag = False
            return Flag


        try:
            self.goods_price = float(goods_price)
        except ValueError as e:
            print  u'商品价格必须是数字!'
            Flag = False
            return Flag

        try:
            # insert into item_list(item_name,item_price,item_total) values('ip',22,33);
            add_goods_sql = "insert into item_list(item_name,item_price,item_total,up_time) values('%s',%s,%s,'%s');" %(self.goods_item,self.goods_price,self.goods_total,self.addtime)
            print add_goods_sql
            self.cur.execute(add_goods_sql)
        except Exception as e:
            print u'新商品上架失败!使用原因是:%s',e

        print u'商品:%s ,单价:%s ,总数:%s,上架成功!' %(self.goods_item,self.goods_price,self.goods_total)








    def shooping(self,card_id):
        #select item_id,item_name,item_price  from item_list ;
        select_item_sql = "select item_id,item_name,item_price,item_total  from item_list ;"
        self.cur.execute(select_item_sql)
        select_item = self.cur.fetchall()
        self.item_list = []    ##商店的所有商品
        self.goods_list = {}   ##都购买了什么,单价,数量,总额
        Flag = True

        print u"\033[31m 商品序号 \t\t\t 商品名称 \t\t\t 商品价格 \t\t\t 商品总量 \33[0m"
        for m in  range(len(select_item)):
            print "\33[33m %3s \t\t\t %10s \t\t\t %8s \t\t\t %s " %(select_item[m][0] ,select_item[m][1] ,select_item[m][2],select_item[m][3])
            self.item_list.append('%d' %select_item[m][0])

        print u"\033[32m %3s \t\t\t 结账!! \33[0m" % int(m+2)
        print u"\033[36m %3s \t\t\t 退出购买,放弃购物车的内容!! \33[0m" % int(m+3)





        while Flag:
            goods = raw_input(u'请您输入购买的商品序号以及购买数量空格分开: ').strip()
            if len(goods.split()) == 2:
                goods_num, goods_nums = goods.split()

                ## 判断输入的商品序号是否有问题
                if not goods_num.isdigit():
                    print u"\033[31m 输入的商品序号有误,应该是数字!! \33[0m"
                    return True

                ## 判断输入的商品数量是否有问题
                if not goods_nums.isdigit():
                    print u"\033[34m 输入购买商品数量有误,应数字!! \33[0m"
                    return True

                ##判断商品是否存在!!
                if not goods_num in self.item_list:
                    print u"\033[33m 您购买的商品不存在!! \33[0m"
                    return True

                ### 商品总量,是否大于购买商品数量

                def compare(goods_total,goods_nums):
                    #print u"商品总量", goods_total, u"购买数量:", goods_nums
                    if float(goods_total) < int(goods_nums):
                        print u"\033[33m 商品数量不足!! \33[0m"
                        return False
                    return True

                n = int(goods_num)
                goods_price = float(select_item[n-1][2]) # 单价
                if not self.goods_list.has_key(goods_num):   ## 新加商品
                    self.goods_list[goods_num] = [float(goods_nums),goods_price,float(goods_nums) * goods_price]
                    com_res = compare(select_item[n - 1][3],self.goods_list[goods_num][0])
                    if not com_res:
                        self.goods_list[goods_num] = [0]
                else:
                    self.goods_list[goods_num][0] = float(float(self.goods_list[goods_num][0]) + float(goods_nums))
                    com_res = compare(select_item[n - 1][3],self.goods_list[goods_num][0])
                    if not com_res:
                            self.goods_list[goods_num][0] = self.goods_list[goods_num][0] - float(goods_nums)
                    else:
                        self.goods_list[goods_num][2] = float(self.goods_list[goods_num][0]) * goods_price
            else:
                ## 判断是否退出购买
                if int(goods) == int(m + 3):
                    print u"\033[36m 正在退出购买,放弃购物车的商品!! \33[0m"
                    self.goods_list = {}
                    return False
                elif int(goods) == int(m + 2):
                    print u"\033[36m 正在为你结账 !! \33[0m"
                    Flag =False
                else:
                    print u"\033[31m 您的输入有误,输入应该是以空格分开的两个数字,或单独一个退出购物的序号!! \33[0m"
                    Flag = False
                    return True



        ## 钱够不够
        # 购买商品总价
        print len(self.goods_list)
        goods_total = self.goods_list.values()
        goods_total_money = 0

        for goods in range(len(goods_total)):    ##商品总费用
            #print goods_total[goods][2]
            goods_total_money = goods_total_money + goods_total[goods][2]

        #print u"您的商品总价格是:%s ",goods_total_money



        ##查看存款
        #select card_balance from back_card where card_id=999990004;
        select_money_sql = "select card_balance from back_card where card_id=%s" % card_id
        self.cur.execute(select_money_sql)
        select_money = self.cur.fetchall()

        if int(select_money[0][0]) < goods_total_money:
            print u'你的商品总费用是:%s,您的余额是:%s,不足购买这些商品!!' % (goods_total_money, select_money[0][0])
            return True

        try:
            ##为您结账

            new_card_balance =  int(select_money[0][0]) - goods_total_money
            new_card_balance_sql = "update back_card set card_balance=%s where card_id=%s ;" % (new_card_balance, card_id)
            self.cur.execute(new_card_balance_sql)

            ##库存更新
            ##查现在的库存
            goods_items = self.goods_list.keys()    ##购买的所有商品id
            for goods in range(len(goods_items)):   ## 从购物车中遍历商品id
                goods_id = goods_items[goods]       ##商品id
                goods_item_total =  float(select_item[int(goods_id) -1 ][3])  ##购买前库存 ,从商品id中找到商品库存
                shoop_goods_total = float(goods_total[goods][0])       ##购买的商品数量
                new_item_total = float(goods_item_total) - float(shoop_goods_total)    ##购买后的库存
                update_item_total_sql = "update item_list set item_total=%s where item_id=%s;" % (new_item_total,goods_id )
                self.cur.execute(update_item_total_sql)


            print u'您的账户有%s元,你的商品总费用是:%s现在余额:%s元,!!' % (select_money[0][0],goods_total_money, new_card_balance)
            return True


        except ReferenceError as e:
            print u'无法为您购买商品,系统发送故障:%s' % e
            return True


if __name__ == "__main__":
    shooping = Shoop()
    #shooping.add_goods()
    shooping.shooping(999990004)