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python 实现银行管理系统
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=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
test2用来调用test1中的函数
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