python 信用卡系统+购物商城见解

通过完成信用卡系统+购物商城 使自己在利用 字典和列表方面有了较大的提升，感悟很深，

下面将我对此次作业所展示的重点列表如下：

#!/usr/bin/env python3.5
# -*-coding:utf8-*-
import pickle,os,datetime,sys

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(BASE_DIR)
# 加载用户信息
if os.path.exists(r'%s/config/user_acc.txt'% BASE_DIR):
    f = open("%s/config/user_acc.txt" % BASE_DIR, "rb")
    data = pickle.loads(f.read())
    f.close()
else:
    data = []
# 加载ATM操作日志信息
if os.path.exists(r'%s/config/user_log.txt'% BASE_DIR):
    fl = open("%s/config/user_log.txt" % BASE_DIR, "rb")
    data_log = pickle.loads(fl.read())
    fl.close()
else:
    data_log = []
# ATM 操作日志增加函数
def User_Action(cz_usercard,cz_flage,usercard,user_action,money=0):
    global data_log
    data_log_add = {}
    data_log_add["cz_usercard"] = cz_usercard
    data_log_add["cz_flage"] = cz_flage
    data_log_add["cz_action"] = user_action
    data_log_add["cz_adduser"] = usercard
    data_log_add["cz_time"] = datetime.datetime.now()
    data_log_add["cz_money"] = money
    data_log.append(data_log_add)
    fl = open("%s/config/user_log.txt" % BASE_DIR, "wb")
    pickle.dump(data_log, fl)
    fl.close()
# 增加用户
def User_Add(cz_usercard,cz_flage,usercard,password,total_money,Repayment_Date,flage):
    global data
    data_list = []
    for user_data in data:
       data_list.append(user_data["usercard"])
    if usercard not in data_list:
        # 增加用户
        user_dic ={}
        user_dic["usercard"] = usercard
        user_dic["password"] = password
        user_dic["new_money"] = total_money
        user_dic["total_money"] = total_money
        user_dic["Repayment_Date"] = Repayment_Date
        user_dic["flage"] = flage
        user_dic["state"] = "on"
        data.append(user_dic)
        f = open("%s/config/user_acc.txt" % BASE_DIR, "wb")
        pickle.dump(data, f)
        f.close()
        User_Action(cz_usercard,cz_flage,usercard,"增加用户")
        print("增加卡号[%s],成功！"%(usercard))
    else:
        print("增加信用卡卡号失败，原因：[“已存在”]")
# 解冻信用卡
def User_thaw(usercard,cz_usercard,cz_flage):
    global data
    # 判断是否为管理员账号
    if cz_flage =="":
        for x_name in data:
            if x_name["usercard"] == usercard:
                x_name["state"] = "on"
        f = open("%s/config/user_acc.txt" % BASE_DIR, "wb")
        pickle.dump(data, f)
        f.close()
        # 写日志
        User_Action(cz_usercard,cz_flage,usercard,"解冻用户")
        print("解冻用户[%s],成功！"%(usercard))

# 用户冻结
def User_Frozen(usercard,cz_usercard,cz_flage):
    global data
    # 判断是否为管理员账号
    if cz_flage =="":
        for x_name in data:
            if x_name["usercard"] == usercard:
                x_name["state"] = "off"
        f = open("%s/config/user_acc.txt" % BASE_DIR, "wb")
        pickle.dump(data, f)
        f.close()
        # 写日志
        User_Action(cz_usercard,cz_flage,usercard,"冻结用户")
        print("冻结用户[%s],成功！"%(usercard))
# 用户删除
def User_del(usercard,cz_usercard,cz_flage):
    global data
    # 判断是否为管理员账号
    if cz_flage =="":
        for index,x_name in enumerate(data):
            if x_name["usercard"] == usercard:
                del data[index]
        f = open("%s/config/user_acc.txt" % BASE_DIR, "wb")
        pickle.dump(data, f)
        f.close()
        # 写日志
        User_Action(cz_usercard,cz_flage,usercard,"删除用户")
        print("删除用户[%s],成功！"%(usercard))

#用户查询
def Select_User():
    for x_name in data:
        if x_name["flage"] =="":
            user_type ="管理员"
        else:
            user_type= "信用卡用户"
        print("-"*100)
        print("用户类型:[%s],卡号:[%s],信用授予额度:[%s]元,信用卡当前余额:[%s]元,账单日:[%s]号"
              %(user_type,x_name["usercard"],x_name["total_money"],x_name["new_money"],x_name["Repayment_Date"]))
# 信用卡额度调整
def card_limit(usercard,money,cz_usercard,cz_flage):
    global data
    for x_name in data:
        if x_name["usercard"] == usercard:
            if x_name["total_money"] + money >= 0:
                x_name["total_money"] += money
                x_name["new_money"] += money
                User_Action(cz_usercard,cz_flage,usercard,"调整信用卡额度",money)
                print("调整信用卡[%s],额度成功！"%(usercard))
            else:
                print("信用卡可用额度不能为负数！")
    f = open("%s/config/user_acc.txt" % BASE_DIR, "wb")
    pickle.dump(data, f)
    f.close()

#!/usr/bin/env python3.5
# -*-coding:utf8-*-
import os,pickle,sys,datetime

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(BASE_DIR)
from contrl.management import User_Action
#加载ATM用户数据库
if os.path.exists(r'%s/config/user_acc.txt'% BASE_DIR):
    f = open("%s/config/user_acc.txt" % BASE_DIR, "rb")
    data_user = pickle.loads(f.read())
    f.close()
# 加载ATM操作日志信息
if os.path.exists(r'%s/config/user_log.txt'% BASE_DIR):
    fl = open("%s/config/user_log.txt" % BASE_DIR, "rb")
    data_log = pickle.loads(fl.read())
    fl.close()

# 消费明细
if os.path.exists(r'%s/config/user_list.txt'% BASE_DIR):
    f_list = open("%s/config/user_list.txt" % BASE_DIR, "rb")
    data_list = pickle.loads(f_list.read())
    f_list.close()
else:
    data_list = []

# 消费明细增加
def sale_add(usercard,usermoney_input,action,state,bills,remarks,Counter=0,interest=0):
    global data_user
    today =datetime.date.today()
    for x_data in data_user:
        if x_data["usercard"] == usercard:
            date = x_data["Repayment_Date"]
            # 计算账单日
            Statement_Date = today.replace(day=date)
            if today > Statement_Date:
                Statement_Date = Statement_Date + datetime.timedelta(days=+30)  # 如果今天消费的日期 大于系统计算出来的账单日，则此笔消费的出账单为下个月
    data_list_dic = {}
    data_list_dic["usercard"] = usercard
    data_list_dic["date"] = datetime.datetime.now()
    data_list_dic["money"] = usermoney_input
    data_list_dic["action"] = action  # 1、信用卡取现 2、转账 3、消费 4、还款
    data_list_dic["state"] = state   # 1、已欠款 2、已还清
    data_list_dic["bills"] = bills   # 1、已出账单 2、未出账单
    data_list_dic["Counter"] = Counter  # 手续费
    data_list_dic["interest"] = interest  # 利息
    data_list_dic["Statement_Date"] = Statement_Date  # 出账单日
    data_list_dic["remarks"] = remarks
    data_list.append(data_list_dic)
    f_list = open("%s/config/user_list.txt" % BASE_DIR, "wb")
    pickle.dump(data_list,f_list)
    f_list.close()

# 查询余额函数
def select_balance(usercard,flage):
    # 定义全局变量
    global data_user
    if flage =="":
        for x_name in data_user:
            # 匹配用户信息
            if x_name["usercard"] == usercard:
                if x_name["new_money"] - x_name["total_money"] >=0:
                    print("""
                您当前可用余额为:%s元,当前信用卡授权额度为%s元，出账单日为每月%s号,当前没有欠款，谢谢！
                """%(x_name["new_money"],x_name["total_money"],x_name["Repayment_Date"]))
                else:
                    print("""
                    您当前可用余额为:%s元,当前信用卡授权额度为%s元，出账单日为每月%s号，当前总欠款%s元，请按时还款！
                    """%(x_name["new_money"],x_name["total_money"],x_name["Repayment_Date"],(x_name["total_money"]-x_name["new_money"]) ))

    else:
        print("请求参数出错，请检查后在试！")
# 查询ATM操作日志
def select_log():
    print("ATM操作日志：")
    for index,x_log in enumerate(data_log):
        x_date = x_log["cz_time"]
        cz_user = x_log["cz_usercard"]
        x_action = x_log["cz_action"]
        x_money = x_log["cz_money"]
        x_user = x_log["cz_adduser"]
        print("-" *200)
        print("序号:[%s]|操作日期:[%s]|操作用户:[%s]｜动作:[%s]|涉及金额:%s元|对象用户:[%s]" %(index+1,x_date,cz_user,x_action,x_money,x_user))

# ATM 取现：
def Take_Money(usercard,usermoney_input,flage):
    global data_user,data_list
    for x_name in data_user:
        if x_name["usercard"] == usercard:
            # 判断可用额度是否满足取现的金额
            if x_name["new_money"] - usermoney_input >= 0:
                Counter = usermoney_input*0.05   # 取现手续费
                x_name["new_money"] -= (usermoney_input + Counter)
                # 写日志
                User_Action(usercard,flage,usercard,"信用卡取款",usermoney_input)
                # 写消费明细
                if x_name["new_money"] >= x_name["total_money"]:
                    sale_add(usercard,usermoney_input,"","","","取现",Counter)
                else:
                    sale_add(usercard,usermoney_input,"","","","取现",Counter)
                print("取现[%s],成功！"%(usermoney_input))
            else:
                print("您当前取现额度超过你信用卡的可用额度，不能取现！")
    f = open("%s/config/user_acc.txt" % BASE_DIR, "wb")
    pickle.dump(data_user, f)
    f.close()

# 信用卡还款
def Card_Payment(usercard,money,flage=""):
    global data_user,data_list
    for x_name in data_user:
        if x_name["usercard"] == usercard:
            x_name["new_money"] += money
            if flage != "":
                print("还款入账成功")
            sale_add(usercard,money,"","","","还款入账")
            # 提前全额还款处理
            if x_name["new_money"] >= x_name["total_money"]:
                for list_name in data_list:
                    if list_name ["usercard"] == usercard:
                        if list_name ["state"] != "":
                            list_name ["state"] = ""
                f_list = open("%s/config/user_list.txt" % BASE_DIR, "wb")
                pickle.dump(data_list,f_list)
                f_list.close()
            # 提前部分还款处理
            else:
                for list_name in data_list:
                    if list_name ["usercard"] == usercard:
                        if list_name ["state"] != "":
                            if list_name["money"] < money:
                                money -= list_name["money"]
                                list_name["state"] = ""
                f_list = open("%s/config/user_list.txt" % BASE_DIR, "wb")
                pickle.dump(data_list,f_list)
                f_list.close()
    # 写还款日志
    User_Action(usercard,flage,usercard,"信用卡还款",money)
    f = open("%s/config/user_acc.txt" % BASE_DIR, "wb")
    pickle.dump(data_user, f)
    f.close()
# 账户转账
def Transfer(usercard,flage,usercard_input,usermoney_input):
    global data_user
    for input_name in data_user:
        if input_name["usercard"] == usercard:
            input_name["new_money"] -= usermoney_input
            # 写消费明细
            if input_name["new_money"] >= input_name["total_money"]:
                sale_add(usercard,usermoney_input,"","","","转账")
            else:
                sale_add(usercard,usermoney_input,"","","","转账")
            # 写日志
            User_Action(usercard,flage,usercard_input,"信用卡转账",usermoney_input)
            # 调用转账还款入账函数
            Card_Payment(usercard_input,usermoney_input)
            print("转账成功！")
    f = open("%s/config/user_acc.txt" % BASE_DIR, "wb")
    pickle.dump(data_user, f)
    f.close()
# 账单明细查询
def select_bill(usercard,bill_date):
    global data_list
    # 已出账单明细
    have_bill = []
    # 未出账单明细
    No_bills = []
    # 未出账单还款入账
    repayment = []
    # 未出账单已还清
    Already = []
    for index,x_name in enumerate(data_list):
        if x_name["usercard"] == usercard:
            # 欠款未出账单消费明细
            if x_name["state"] == "" and x_name["bills"] == "":
                No_bills.append(data_list[index])
            # 欠款已出账单消费明细
            elif x_name["state"] == "" and x_name["bills"] == "":
                have_bill.append(data_list[index])
            # 转账还款入账明细
            elif x_name["bills"] == "" and x_name["action"] == "":
                repayment.append(data_list[index])
            # 已还清未出账单明细
            elif x_name["bills"] == "" and x_name["state"] == "":
                Already.append(data_list[index])

    if len(have_bill) != 0:
        print("以下消费为已出账单未还清明细：")
        for index,have_bill_list in enumerate(have_bill):
            x_date = have_bill_list["date"]
            x_action = have_bill_list["remarks"]
            x_money = have_bill_list["money"]
            x_Counter = have_bill_list["Counter"]
            x_Statement_Date = have_bill_list["Statement_Date"]
            x_state = "未还清"
            x_interest = have_bill_list["interest"]
            print("-" *150)
            print("序号:[%s]|日期:[%s]|类型:[%s]｜金额:[%s]元|手续费:%s元|状态:[%s]|此笔交易出账单日[%s]|累计利息为:%s元" %(index+1,x_date,x_action,x_money,x_Counter,x_state,x_Statement_Date,x_interest))
    if len(No_bills) != 0:
        print("以下消费为未出账单未还清明细：")
        for index,No_bills_list in enumerate(No_bills):
            x_date = No_bills_list["date"]
            x_action = No_bills_list["remarks"]
            x_money = No_bills_list["money"]
            x_Counter =No_bills_list["Counter"]
            x_Statement_Date = No_bills_list["Statement_Date"]
            x_state = "未还清"
            print("-" *100)
            print("序号:[%s]|日期:[%s]|类型:[%s]｜金额:[%s]元|手续费:%s元|状态:[%s]|此笔交易出账单日[%s]" %(index+1,x_date,x_action,x_money,x_Counter,x_state,x_Statement_Date))
    if len(repayment) != 0:
        print("以下为未出账单还款明细：")
        for index,repayment_list in enumerate(repayment):
            x_date = repayment_list["date"]
            x_action = repayment_list["remarks"]
            x_money = repayment_list["money"]
            x_Counter = repayment_list["Counter"]
            x_state = "还款入账"
            print("-" *100)
            print("序号:[%s]|日期:[%s]|类型:[%s]｜金额:[%s]元|手续费:%s元|状态:[%s]" %(index+1,x_date,x_action,x_money,x_Counter,x_state))
    if len(Already) != 0:
        print("以下为未出账单已还款或无需还款消费明细：")
        for index,Already_repayment_list in enumerate(Already):
            x_date = Already_repayment_list["date"]
            x_action = Already_repayment_list["remarks"]
            x_money = Already_repayment_list["money"]
            x_Counter = Already_repayment_list["Counter"]
            x_state = "正常"
            print("-" *100)
            print("序号:[%s]|日期:[%s]|类型:[%s]｜金额:[%s]元|手续费:%s元|状态:[%s]" %(index+1,x_date,x_action,x_money,x_Counter,x_state))

在处理利息计算方面，这是我想到的方法：

#!/usr/bin/env python3.5
# -*-coding:utf8-*-
import datetime,pickle,os,sys
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(BASE_DIR)
# 加载利息计算日志文件
if os.path.exists(r'%s/config/calculation_log.txt'% BASE_DIR):
    f_calculation = open("%s/config/calculation_log.txt" % BASE_DIR, "rb")
    data_calculation = pickle.loads(f_calculation.read())
    # 利息初始化文件
    # print(data_calculation)
    f_calculation.close()
else:
    data_calculation = []
# 加载用户信息
if os.path.exists(r'%s/config/user_acc.txt'% BASE_DIR):
    f = open("%s/config/user_acc.txt" % BASE_DIR, "rb")
    data = pickle.loads(f.read())
    f.close()
else:
    data = []
# 加载消费明细
if os.path.exists(r'%s/config/user_list.txt'% BASE_DIR):
    f_list = open("%s/config/user_list.txt" % BASE_DIR, "rb")
    data_list = pickle.loads(f_list.read())
    f_list.close()
else:
    data_list = []
# 初始化利息计算文件列表
def calculation_computer():
    global data, data_calculation, data_list
    # 获取今天时间
    today = datetime.date.today()
    # 取昨天的时间
    yesterday = datetime.date.today()+datetime.timedelta(days=-1)
    for user_data in data:
        if user_data["flage"] == "":
            # 获取 账单日
            x_data_date = user_data["Repayment_Date"]
            # 生成账单日期
            x_data_time = today.replace(day=x_data_date)
            # 如果文件内容不为空
            if len(data_calculation) != 0:
                for y_data in data_calculation:
                    # 如果信用卡卡号在文件字典里存在关键字
                    if user_data["usercard"] in y_data.keys():
                        for x in y_data[user_data["usercard"]]:
                            # 如果该字典里存在今天新加的记录则跳出
                            if x["date"] == today:
                                break
                            # 如果字典里的日期与昨天有误差则进行增加
                            elif yesterday > y_data[user_data["usercard"]][-1]["date"]:
                                date = y_data[user_data["usercard"]][-1]["date"] + datetime.timedelta(days=1)
                                y_data[user_data["usercard"]].append({"date":date,"money":0,"computer":""})
                                continue
                        else:
                            y_data[user_data["usercard"]].append({"date":today,"money":0,"computer":""})
                            break
                # 如果全部循环后找不到key 则新增
                else:
                    # 重复数据判断
                    list_data = []
                    for y_data in data_calculation:
                        for k in y_data:
                            list_data.append(k)
                    # 如果要添加的数据在利息初始化文件中不存大
                    if user_data["usercard"] not in list_data:
                        if today > x_data_time:
                            new_dic = {user_data["usercard"]:[{"date":x_data_time,"money":0,"computer":""}]}
                            data_calculation.append(new_dic)
                        elif today < x_data_time:
                            new_dic = {user_data["usercard"]:[{"date":today,"money":0,"computer":""}]}
                            data_calculation.append(new_dic)
                # 将所有利息数据写入文件中
                fl = open("%s/config/calculation_log.txt" % BASE_DIR, "wb")
                pickle.dump(data_calculation, fl)
                fl.close()
            # 如果文件内容为空
            else:
                # 时间按账单日开始记录
                if today > x_data_time:
                    new_dic = {user_data["usercard"]:[{"date":x_data_time,"money":0,"computer":""}]}
                    data_calculation.append(new_dic)
                elif today < x_data_time:
                    new_dic = {user_data["usercard"]:[{"date":today,"money":0,"computer":""}]}
                    data_calculation.append(new_dic)
                fl = open("%s/config/calculation_log.txt" % BASE_DIR, "wb")
                pickle.dump(data_calculation, fl)
                fl.close()
                calculation_computer()
# 出账单及利息计算
def computer():
    global data, data_calculation, data_list
    # 调用利息初始化文件
    calculation_computer()
    # 获取今天时间
    today = datetime.date.today()
    for x_data in data:
        if x_data["flage"] == "":
            x_usercard = x_data["usercard"]   # 获取计算信用卡卡号
            # 获取账单还款到期日，每月10号
            due_date = today.replace(day=10)
            # 如果到期还款日小于账单日，当前利息计算日 ＝ 当月计算利息日－30天
            xx_time = due_date + datetime.timedelta(days=-30)
            # 加载消费明细账单
            for z_data in data_list:
                # 定位当前用户所有没有出账单的明细,如果今天大于或等于该笔消费出账单日
                if z_data["usercard"] == x_usercard and z_data["bills"] == "" and today >= z_data["Statement_Date"]:
                    # 则更改当前该笔消费为已出账单
                    z_data["bills"] = ""
            f_list_computer = open("%s/config/user_list.txt" % BASE_DIR, "wb")
            pickle.dump(data_list, f_list_computer)
            f_list_computer.close()
            # 调用利息计算初始化文件
            for xy_data in data_calculation:
                # 定位到当前用户下所有记账日
                if x_usercard in xy_data.keys():
                    for date in xy_data[x_usercard]:
                        if date["computer"] == "":
                            # 定位到当前用户下所有出账单的未还清的消费记录
                            # 初始化记账日所有利息
                            counter = 0
                            for z1_data in data_list:
                                # 如果记账日没有清算
                                 if z1_data["usercard"] == x_usercard and z1_data["bills"] == "":
                                    # 如果记账日大于最后还款日大于账单日
                                    if date["date"] > due_date > z1_data["Statement_Date"] and z1_data["state"] == "":
                                        z1_data["interest"] += (z1_data["money"]+z1_data["Counter"])*0.0005
                                        counter += (z1_data["money"]+z1_data["Counter"])*0.0005
                                    # 如果记账日小于出账单日或小于最后还款日
                                    elif date["date"] > xx_time > z1_data["Statement_Date"] and z1_data["state"] == "":
                                        z1_data["interest"] += (z1_data["money"]+z1_data["Counter"])*0.0005
                                        counter += (z1_data["money"]+z1_data["Counter"])*0.0005
                            x_data["new_money"] -= counter  # 更新当前用户的余额
                            f_list_computer = open("%s/config/user_list.txt" % BASE_DIR, "wb")
                            pickle.dump(data_list,f_list_computer)
                            f_list_computer.close()
                            date["computer"] = ""
                            continue
                    break
            fl = open("%s/config/calculation_log.txt" % BASE_DIR, "wb")
            pickle.dump(data_calculation, fl)
            fl.close()
    fx = open("%s/config/user_acc.txt" % BASE_DIR, "wb")
    pickle.dump(data, fx)
    fx.close()