python怎么实现银行管理系统

#test1.py import random #用来随机产生卡号 import pickle #序列化，用来存放和取出产生的用户数据 import os #产生文件 import re #正则表达式，用来判断身份证和手机号，其他地方也可以使用 class Card: def __init__(self,cardId,password,money=0): self.cardId=cardId self.password=password self.money=money class User(Card): def __init__(self,username,phone,uid,card): self.username=username self.phone=phone self.uid=uid self.user_card=card #User继承Card对象 class Bank(User): #Bank 继承User，Bank是序列化的对象，所以将其变为字典 def __init__(self,user): self.cardId=user.user_card.cardId self.user=user self.users={self.cardId:self.user} #键，卡号：值，User对象 def generate_cardid(): #方法一产生卡号 list=[] for i in range(0,11): n=random.randint(0,9) n=str(n) list.append(n) # str="".join(list) return list # generate_cardid() # user_cardId=input("请输入您的账号：") def create_user(): #方法2:开户 while True: uid=input("请输入身份证:") realut=re.fullmatch("\d{17}[\d,X]",uid) #正则判断身份证是否合理 if realut: uid=realut.group() break else: print("格式不合法") continue username=input("请输入姓名:") while True: phone=input("请输入手机号码:") realut = re.fullmatch("1\d{10}", phone) #正则判断手机号是否合理，其他需要判断的地方都可以判断，我就不再使用了 if realut: phone=realut.group() # print(phone) break else: print("格式不合法") continue list=generate_cardid() #得到卡号列表 cardId="".join(list) #将卡号变成字符串，字符串的卡号才能做成键 print(f"您的卡号为：{cardId}") while True: password1=input("请输入密码:") password2=input("再次输入密码确认:") if password1==password2: password=password1 break else : print("两次密码不同，请重新输入！") continue card=Card(cardId,password) user=User(uid,username,phone,card) bank=Bank(user) #产生bank对象 with open(f"data\\{cardId}.txt","ab") as file_w: #重点：创建一个文件夹data来存放产生的bank对象，每个对象根据卡号产生一个txt文件，用来存放用户的所有数据 pickle.dump(bank,file_w) #将bank 序列化保存到文档中 # create_user() def user_login(user_cardId): #登录 if os.path.exists(f"data\\{user_cardId}.txt"): with open(f"data\\{user_cardId}.txt", "rb") as file_r: u_data = pickle.load(file_r) #根据卡号取出txt文档，反序列化取出数据 if u_data.cardId == user_cardId: #u_data是一个字典，键是卡号，值是user对象 n = 1 while True: if n <= 3: user_pw = input("请输入密码:") if u_data.user.user_card.password == user_pw: return True else: print("密码错误！") n+=1 continue else: print("三次输入密码错误！") return else: print("没有该用户") # user_login(user_cardId) def save_money(user_cardId): # 方法4:存钱 if user_login(user_cardId): #如果登录成功 money=int(input("请您输入存钱金额：")) with open(f"data\\{user_cardId}.txt", "rb") as file_r: u_data = pickle.load(file_r) u_data.user.user_card.money=u_data.user.user_card.money+money print("您的余额为:",u_data.user.user_card.money) with open(f"data\\{user_cardId}.txt", "wb") as file_w: #这里要用wb,而不是ab,改变数据后，需要覆盖原来的数据，而不是添加 pickle.dump(u_data, file_w) # save_money() def withdraw_money(user_cardId): # 方法5:取钱 if user_login(user_cardId): money=int(input("请您输入取款金额：")) with open(f"data\\{user_cardId}.txt", "rb") as file_r: u_data = pickle.load(file_r) if money>u_data.user.user_card.money: print("余额不足") else: u_data.user.user_card.money=u_data.user.user_card.money-money print("您的余额为:", u_data.user.user_card.money) with open(f"data\\{user_cardId}.txt", "wb") as file_w: pickle.dump(u_data, file_w) # withdraw_money() def transfer_accounts(user_cardId): #方法6，转账 if user_login(user_cardId): with open(f"data\\{user_cardId}.txt", "rb") as file_r: u_data = pickle.load(file_r) while True: money = int(input("请您转账取款金额：")) if money > u_data.user.user_card.money: print("余额不足") break else: cardId=int(input("请您对方卡号：")) if os.path.exists(f"data\\{cardId}.txt"): #如果对方卡号存在 u_data.user.user_card.money = u_data.user.user_card.money - money #自己的money减 print("您的余额为:", u_data.user.user_card.money) with open(f"data\\{user_cardId}.txt", "wb") as file_w: pickle.dump(u_data, file_w) with open(f"data\\{cardId}.txt", "rb") as file_r1: #根据对方的卡号进行查找对方的数据 u_data1 = pickle.load(file_r1) with open(f"data\\{cardId}.txt", "wb") as file_w1: u_data1.user.user_card.money = u_data1.user.user_card.money + money #对方money加 pickle.dump(u_data1, file_w1) print("转账成功") break else: print("该用户不存在") break # transfer_accounts() def select_user(user_cardId): # 方法7:查询余额 if user_login(user_cardId): with open(f"data\\{user_cardId}.txt", "rb") as file_r: u_data = pickle.load(file_r) print("您的余额为：",u_data.user.user_card.money) # select_user() def update_password(user_cardId): # 方法8:修改密码 if user_login(user_cardId): while True: pw1=input("请输入新密码:") pw2=input("请再次输入密码:") if pw1==pw2: with open(f"data\\{user_cardId}.txt", "rb") as file_r: u_data = pickle.load(file_r) u_data.user.user_card.password=pw1 with open(f"data\\{user_cardId}.txt", "wb") as file_w: pickle.dump(u_data, file_w) break else: print("两次密码不相同") continue

import test1 import os T =True while True: user_cardId=input("请输入您的账号,退出请按0,注册请按1:\n") if os.path.exists(f"data\\{user_cardId}.txt"): true=True while true: x = input("[2]查询余额 [3]取款 [4]存钱 [5]转账 [6]修改密码 [7]退出系统\n" "请选择需要的操作输入对应的数字：" if x=="2": #键盘输入默认是str类型 test1.select_user(user_cardId) continue elif x=="3": test1.withdraw_money(user_cardId) continue elif x=="4": test1.save_money(user_cardId) continue elif x=="5": test1.transfer_accounts(user_cardId) continue elif x=="6": test1.update_password(user_cardId) continue elif x=="7": true=False else: print("没有对应操作") continue elif user_cardId=="0": print("欢迎再次使用") break elif user_cardId=="1": test1.create_user() continue else : print("没有该账户") T=True while T: num = input("需要注册账号请按1，退出注册服务请按0：") if num =="1": test1.create_user() elif num =="0": print("欢迎再次使用") T =False break else: print("没有对应操作") continue break

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