class_info = []

def print_menu():
    print("-------------------")
    print("学生管理系统 V1.0")
    print(" 1:添加学生")
    print(" 2:删除学生")
    print(" 3:修改学生")
    print(" 4:查询学生")
    print(" 5:显示所有学生")
    print(" 6:退出系统")
    print("-------------------")


def add_student():
    print("欢迎使用添加学生的功能")
    global class_info
    name = input("输入学生的姓名:")
    age = input("输入学生的年龄:")
    score = input("输入学生的分数:")
    # [{},{}]
    for info in class_info:
        if info["name"] == name:
            print("学生姓名重名了")
            return

    student = {
        "name": name,
        "age": age,
        "score": score
    }

    class_info.append(student)
    print("添加学生信息成功")
    print(class_info)


def del_student():
    print("欢迎使用删除学生的功能")
    global class_info
    name = input("请输入删除的学生姓名:")
    for student in class_info:
        if student["name"] == name:
            class_info.remove(student)
            print("删除学生信息成功")
            return
    print("您输入的学生姓名不存在")


def modify_student():
    global class_info
    name = input("请输入需要修改的学生信息:")
    for student in class_info:
        if student["name"] == name:
            student["name"] = input("请输入修改后的学生姓名:")
            # jx = input("是否继续修改:")
            # if jx == "y" or jx == "yes":
            student["age"] = input("请输入修改后的学生年龄:")
            student["score"] = input("请输入修改后的学生分数:")
            print("修改学生信息成功")
            return
    print("您输入的学生信息不存在")


def search_student():
    global class_info
    name = input("请输入要查找的学生姓名:")
    for student in class_info:
        if student["name"] == name:
            print("姓名:%s, 年龄:%s, 分数:%s" %(student["name"], student["age"], student["score"]))
            return
    print("您输入的学生信息不存在")


def show_student():
    print("姓名--年龄---成绩")
    for student in class_info:
        print(student["name"], student["age"], student["score"])


def main():
    """实现主要的业务逻辑"""
    while True:
        # print_menu()
        print_menu()
        choose = int(input("请输入您需要的功能:"))

        if choose == 1:
            add_student()
        elif choose == 2:
            del_student()
        elif choose == 3:
            modify_student()
        elif choose == 4:
            search_student()
        elif choose == 5:
            show_student()
        elif choose == 6:
            print("退出系统 Bye")
            break


if __name__ == '__main__':
    main()