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()

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