python实现银行管理系统

python 实现银行管理系统，供大家参考，具体内容如下

有的地方用的方法的比较复杂，主要是为回顾更多的知识

test1用来存类和函数

#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=moneyclass 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