day7-作业

import copy
num = 0
list1=[]
dict2 = {'学号':'stu'}
while 1:
    print('1.添加学生\n2.查看学生\n3.修改学生信息\n4.删除学生\n5.返回')
    y = int(input('请选择1-5：'))
    if y == 1:
        while 1:
            num += 1
            str2 = 'stu'+ str(num).rjust(3, '0')
            dict2['学号'] = str2
            x = input('姓名')
            dict2.update({'姓名':x})
            x = int(input('age'))
            dict2.update({'age':x})
            x = int(input('del'))
            dict2.update({'del': x})
            dict3=copy.deepcopy(dict2)
            list1.append(dict3)
            print('添加成功')
            z=int(input('1.继续\n2.返回\n请输入:'))
            if z==2:
                break

    elif y==2:
        print('1.查看所有学生\n2.按姓名查找\n3.按学号查找\n4.返回')
        a = int(input('请输入：'))
        if a==1:
            for dict2 in list1:
                a1 = dict2.get('学号')
                a2 = dict2.get('姓名')
                a3 = dict2.get('age')
                a4 = dict2.get('del')
                print('学号:%s 姓名:%s age:%d del:%d' % (a1,a2,a3,a4))
        elif a==2:
            b = input('请输入学生姓名:')
            print(b)
            for dict2 in list1:
                if dict2.get('姓名') == b:
                    a1 = dict2.get('学号')
                    a2 = dict2.get('姓名')
                    a3 = dict2.get('age')
                    a4 = dict2.get('del')
                    print('学号:%s 姓名:%s age:%d del:%d' % (a1, a2, a3, a4))
            else:
                print('没有此学生')
        elif a==3:
            c = input('请输入学生学号:')
            for dict2 in list1:
                if dict2.get('学号') == c:
                    a1 = dict2.get('学号')
                    a2 = dict2.get('姓名')
                    a3 = dict2.get('age')
                    a4 = dict2.get('del')
                    print('学号:%s 姓名:%s age:%d del:%d' % (a1, a2, a3, a4))
            else:
                print('没有此学生')
    elif y==3:
        for dict2 in list1:
            a1 = dict2.get('学号')
            a2 = dict2.get('姓名')
            a3 = dict2.get('age')
            a4 = dict2.get('del')
            print('学号:%s 姓名:%s age:%d del:%d' % (a1, a2, a3, a4))
            print('是否需要修改')
            d = int(input('1.要\n2.不\n请输入：'))
            if d==1:
                print('请修改')
                e=input('key=:')
                f = input('value=:')
                dict2[e] = f
                a1 = dict2.get('学号')
                a2 = dict2.get('姓名')
                a3 = dict2.get('age')
                a4 = dict2.get('del')
                print('学号:%s 姓名:%s age:%d del:%d' % (a1, a2, a3, a4))
            break
    elif y==4:
        for dict2 in list1:
            a1 = dict2.get('学号')
            a2 = dict2.get('姓名')
            a3 = dict2.get('age')
            a4 = dict2.get('del')
            print('学号:%s 姓名:%s age:%d del:%d' % (a1, a2, a3, a4))
            print('是否需要删除')
            d = int(input('1.要\n2.不\n请输入：'))
            if d == 1:
                list1.remove(dict2)
            break