学生管理系统

# def show_menu():
#     print('*******欢迎使用学生管理系统*************')
#     print('*******	 1.增加学生信息************')
#     print('*******	 2.删除学生信息************')
#     print('*******	 3.修改学生信息************')
#     print('*******	 4.展示所有学生信息************')
#     print('*******	 5.根据名字查询************')
#     print('*******	 6.统计平均年龄************')
#     print('*******	 7.退出系统************')
# 
# def add_stu():
#     flag = "y"
#     student =[]
#     while flag == "y":
#         id = input("请输入编号：")
#         name = input("请输入名字")
#         sex = input("请输入性别")
#         age = input("请输入年龄")
# 
#         stu = {"id":id,"name":name,"sex":sex,"age":age}
#         student.append(stu)
#         flag= input("是否继续（y/n）：")
#     print("学生添加完成")
#     return student
# def del_stu(student):   #删除
#     print(student)
#     name = input("请输入要删除的名字：")
#     delnum = 0
#     for i,stu in enumerate(student):
#         if stu["name"] == name:
#             delnum=i
#             break
#     student.pop(delnum)
# 
# def update_stu(student):   # 修改
#     print(student)
#     name = input("请输入要修改的名字")
#     delnum = 0
#     for i, stu in enumerate(student):
#         if stu['name'] == name:
#             delnum = i
#             break
#     student.pop(delnum)
# 
#     id = input("请输入编号：")
#     name = input("请输入名字")
#     sex = input("请输入性别")
#     age = input("请输入年龄")
#     stu = {"id": id, "name": name, "sex": sex, "age": age}
#     return student.append(stu)
# 
# 
# 
# def show_stu(student):   #   展示
#     for stu in student:
#         print(stu)
# 
# 
# 
# def search_name(student):  #   查找
#     print(student)
#     name = input("请输入查找的名字")
#     delunm = 0
#     for i,stu in enumerate(student):
#         if stu["name"] == name:
#             delnum=i
#             break
#     print(student[delunm])
# 
# def avg_age(student):   # 统计年龄
#     sum = 0
#     for stu in student:
#         sum += int(stu["age"])
#     print(f"平均年龄：{sum/len(student)}")
# 
# if __name__ =="__main__":
#     student=[]
#     while True:
#         show_menu()
#         option =int(input("请输入你要做的选项(1-7):"))
#         if option == 7:
#             print("感谢使用")
#             flag = input("确定要退出吗？（y退出/n不退出）：")
#             if flag == "y":
#                 break
#             else:
#                 continue
#         elif option==1:
#             student = add_stu()
#             continue
#         elif option == 2:
#             del_stu(student)
#         elif option ==3:
#             update_stu(student)
#         elif option == 4:
#             show_stu(student)
#         elif option ==5:
#             search_name(student)
#         elif option == 6:
#             avg_age(student)
#         else:
#             print("输入有误，请重新输入")