学生管理系统初版

pag_indexpage="""
学生管理系统
==================
1."添加学生"
2."修改学生"
3,"查询学生"
4."删除学生"
5."返回"
==================
"""
name=''
age=0
tel=0
sex=''

list_stu=[ ]
dic1_stu = {'姓名:': '王', '年龄:': 12, '电话:': 18990909090, '性别:': '女'}
while True:
    print(pag_indexpage)
    choose=int(input("请选择1-5:"))
    if choose ==1:
        while True:
            print("添加学生")
            dic1_stu["姓名:"] = input( )
            dic1_stu["年龄:"] = int(input())
            dic1_stu["电话:"] = int(input())
            dic1_stu["性别:"] = input()
            print(dic1_stu)
            print("添加成功")

            print("1.继续")
            print("2.返回")
            choose1=0
            choose1=int(input("请选择继续OR返回:"))

            if choose1 == 1:
                print("1.继续")
            elif choose1 == 2:
                print("2.退出")
                break

    elif choose == 2:
        while True:
            print(pag_indexpage)
            choose = int(input("请选择1-5:"))
            print("修改学生")
            print(dic1_stu)
            dic1_stu["姓名"]="张三"
            dic1_stu["年龄"] = 10
            dic1_stu["电话"] = 1333333333
            dic1_stu["性别"] = "男"
            print(dic1_stu)
            print("1.继续")
            print("2.返回")
            choose2=0
            choose2=int(input("请选择继续OR返回:"))
            if choose2==1:
                print("1.继续")
            elif choose2==2:
                print("2.退出")
                break


    elif choose == 3:
        while True:
            print("查看学生")
            print("1.查看所有学生")
            print("2.按姓名查看")
            print("3.按学号查看")
            print("4.返回")
            choose3=0
            choose3 = int(input("请选择:"))
            if choose3==1:
                print("1.查看所有学生")
                print(dic1_stu)
            elif choose3==2:
                print("2.按姓名查看")
                dic1_stu["姓名:"]
                print(dic1_stu)
            elif choose3==3:
                print("3.按学号查看")
            else:
                print("4.返回")
                break

    elif choose == 4:
        print("删除学生")

    else:
        print("返回")
        break