day7-作业

import copy
name_students_information = {}
number_students_information = {}
personal_information = {}
personal_information2 = {}
while True:

print("===================================================================")
print("✿✿欢迎yuting:\n")
print("\t❤ 1. 添加学生\n\t❤ 2. 查看学生\n\t❤ 3. 修改学生信息\n\t❤ 4. 删除学生\n\t❤ 5. 返回")
print("===================================================================")
choice1 = input("请选择(1-5):")
# 数据关系 一个列表保存多个学生的个人信息,每个学生的个人信息保存学号,年龄,姓名等内容.
# 创建一个列表,列表里面包含许多个字典(个人信息),查找信息时,先遍历列表定位,

#   添加学生
if choice1 == '1':
    while True:
        number = input("请输入学号:")
        personal_information.update({'学号': number})
        name = input("请输入学生姓名:")
        personal_information.update({'姓名': name})
        age = input("请输入学生年龄:")
        personal_information.update({'年龄': age})
        tel = input("请输入学生电话:")
        personal_information.update({'电话': tel})

        name_students_information.update({name: copy.deepcopy(personal_information)})
        number_students_information.update({number: name_students_information[name]})
        personal_information.clear()

        print("添加成功!\n1.继续\n2.返回")
        value1 = input("请选择(1-2)")
        if value1 == '1':
            continue
        elif value1 == '2':
            break

#   查看学生
elif choice1 == '2':
    while True:
        print("1.查看所有学生\n2.按姓名查找\n3.按学号查找\n4.返回")
        choice2 = input("请选择(1-4)")
        if choice2 == '1':  # 1.查看所有学生
            for name1 in name_students_information:
                for key in name_students_information[name1]:
                    print(key, ' ', name_students_information[name1][key], end=' ')
                print('\n')

        elif choice2 == '2':        # 2. 按姓名查找
            name2 = input("请输入姓名:")
            if name_students_information.get(name2) == None:
                print("没有这名学生!")
            else:
                for key in name_students_information[name2]:
                    print(key, ' ', name_students_information[name2][key], end=' ')
                print('\n')

        elif choice2 == '3':    # 3.按学号查找
            number1 = input("请输入学号:")
            if number_students_information.get(number1) == None:
                print("没有这名学生!")
            else:
                for key in number_students_information[number1]:
                    print(key, ' ', number_students_information[number1][key], end=' ')
                print('\n')
        elif choice2 == '4':
            break
        else:
            print("请重新输入!")

#   修改学生信息
elif choice1 == '3':
    while True:
        name3 = input("请输入要修改的学生的名字:")
        if name_students_information.get(name3) == None:
            print("没有找到该学生,请重新输入!")
            break
        else:
            number = input("请输入新的学号:")
            personal_information.update({'学号': number})
            name = input("请输入学生新的姓名:")
            personal_information.update({'姓名': name})
            age = input("请输入学生新的年龄:")
            personal_information.update({'年龄': age})
            tel = input("请输入学生新的电话:")
            personal_information.update({'电话': tel})
            del name_students_information[name]

            name_students_information.update({name: copy.deepcopy(personal_information)})
            number_students_information.update({number: name_students_information[name]})
            personal_information.clear()
            print("修改成功!")

            choice3 = input("1. 继续\n2. 返回")
            if choice3 == '1':
                continue
            elif choice3 == '2':
                break

#   删除学生
elif choice1 == '4':
    while True:
        name3 = input("请输入要删除的学生名")
        if name_students_information.get(name3) == None:
            print("没有找到该学生,请重新输入!")
            break
        else:
            choice4 = input("确定要删除吗? 1. 确认删除\n2. 取消")
            if choice4 == '1':
                del name_students_information[name3]
            elif choice4 == '2':
                continue
            else:
                print("请重新输入!")

#   返回
elif choice1 == '5':
    break
else:
    print("请重新输入!")