Python用list和dict实现简单的用户管理系统（增、删、改、查），,#更新用户ID数组d

Python用list和dict实现简单的用户管理系统（增、删、改、查），,#更新用户ID数组d

#更新用户ID数组def updateUserIDs():    global userIds    userIds = []    for i in userList:        userIds.append(i[‘id‘])#添加用户def addUser():    print(‘当前用户编号：‘)    print(userIds)    user = {};    while True:        userId = int(input(‘请输入添加用户的编号：‘))        if userId in userIds:            print(‘您输入的用户编号已存在！请重新输入‘)        else:            user[‘id‘] = userId            user[‘name‘] = input(‘请输入用户名：‘)            user[‘pw‘] = input(‘请输入密码：‘)            userList.append(user)            print(‘添加用户成功！‘)            print()            updateUserIDs()            break#删除用户def delUser():    print(‘当前用户编号：‘)    print(userIds)    while True:        userId = int(input(‘请输入想要删除的用户编号：‘))        if userId in userIds:            for user in userList:                if user.get(‘id‘)==userId:                    userList.remove(user)                    updateUserIDs()                    print(‘删除成功‘)                    print()            break        else:            print(‘输入的用户编号有误，请核对！‘)    #修改用户def updateUser():    print(‘当前用户编号：‘)    print(userIds)    while True:        userId = int(input(‘请输入修改用户的编号‘))        if userId in userIds:            for user in userList:                if user[‘id‘] == userId:                    user[‘name‘] = input(‘请输入姓名：‘)                    user[‘pw‘] = input(‘请输入密码：‘)                    updateUserIDs()                    print(‘用户信息修改成功！‘)            print()            break        else:            print(‘输入的用户编号有误，请核对！‘)#查询用户def findUser():    print(‘当前用户编号：‘)    print(userIds)    while True:        userId = int(input(‘请输入查找用户的编号‘))        if userId in userIds:            for user in userList:                if user[‘id‘] == userId:                    print(‘查找用户信息为：‘)                    print(‘name:‘,user[‘name‘])                    print(‘password：‘,user[‘pw‘])                    print()            break        else:            print(‘输入的用户编号有误，请核对！‘)#查询全部def allUser():    print(‘id\tname\tpassword‘)    for user in userList:        print(str(user[‘id‘])+‘\t‘+user[‘name‘]+‘\t‘+user[‘pw‘])    printuser1 = {‘id‘:2, ‘name‘:‘张三1‘, ‘pw‘:‘123‘}user2 = {‘id‘:23, ‘name‘:‘张三2‘, ‘pw‘:‘456‘}user3 = {‘id‘:21, ‘name‘:‘张三3‘, ‘pw‘:‘789‘}userList = [user1, user2, user3]userIds = []for i in userList:    userIds.append(i[‘id‘])menuIds = [1,2,3,4,5,6]menuList = ["添加用户","删除用户","修改用户","查询用户","查询全部","退出"]while True:    print(‘欢迎来到用户管理系统‘)    for i in range(len(menuIds)):        print(‘\t‘,menuIds[i],menuList[i])    choice = int(input(‘请输入序号进行选择：‘))    if choice == 1:        addUser()    elif choice == 2:        delUser()    elif choice == 3:        updateUser()    elif choice == 4:        findUser()    elif choice == 5:        allUser()    elif choice == 6:        print(‘欢迎下次使用‘)        break    else:        print(‘输入序号有误‘)

Python用list和dict实现简单的用户管理系统（增、删、改、查）