函数（相关代码）

# def tixing(a,b,h):
#     return (a+b)*h/2
# a = int(input('请输入上边长：'))
# b = int(input('请输入下边长：'))
# h = int(input('请输入高度：'))
# jieguo = tixing(a,b,h)
# print((a+b)*h/2)

# def panduan(num_4):
#     if num_4%400 ==0 or num_4%4==0 and num_4%100!=0:
#         return "为闰年"
#     else:
#         return "不是闰年"
# 
# if __name__ == '__main__':
#     nianfen = int(input("请输入年份："))
#     print(panduan(nianfen))

# def print_info():
#     print("++++++++++++++++++++++")
#     print("欢迎来到学生管理系统")
#     print("1.添加学生信息")
#     print("2.修改学生信息")
#     print("3.查看学生信息")
#     print("4.删除学生信息")
#     print("5.显示所有学生信息")
#     print("6.退出")
#     print("++++++++++++++++++++++")
# student_info = []
#
# def add_info():
#     global student_info
#     id = input("请输入学生的id:")
#     name = input("请输入学生的姓名:")
#     age = input("请输入学生的年龄:")
#     sex = input("请输入学生的性别:")
#     dict_info = {}
#     dict_info["id"] = id
#     dict_info["name"] = name
#     dict_info["age"] = age
#     dict_info["sex"] = sex
#     student_info.append(dict_info)
#     print(student_info)
#
#
# def xiu_info():
#     global student_info
#     num_3 = int(input("请输入需要修改的学生的id"))
#     new_name = input("请输入新的名字  (回车不修改)")
#     student_info[num_3-1]["name"] = new_name
#     new_age = input("请输入新的年龄   (回车不修改)")
#     student_info[num_3-1]["age"] = new_age
#     new_sex = input("请输入新的性别   (回车不修改)")
#     student_info[num_3-1]["sex"] = new_sex
#     print(student_info)
#
#
# def show_info():
#     global student_info
#     num_4 = int(input("请输入要查询信息的学生id"))
#     print(student_info[num_4-1])
#
#
# def del_info():
#     global student_info
#     num_5 = int(input("请输入要删除信息的学生id"))
#     del student_info[num_5-1]
#     all_info()
#
#
# def all_info():
#     print(student_info)