設計一個學生類&班級類

第一題

• 設計一個學生類
  • 屬性：姓名、學號、年齡、成績
• 設計一個班級類要求：實現向班級中添加學生、刪除學生、查看學生、按照指定條件排序
  • 屬性：班級代號，所有學生
• 需要使用
• calss, __int__, __str__, sort, append, dict, list, remove, for in

class Stu:
    # 設置學生基礎屬性
    def __init__(self, name, num, age, score):
        self.name = name
        self.num = num
        self.age = age
        self.score = score

    def __str__(self):
        return '姓名:{},學號:{},年齡:{},成績{}'.format(self.name, self.num, self.age, self.score)


# 查看學生類是否創建成功
# c = Stu('小米', 100, 18, 66)
# print(c)

class Class1:
    def __init__(self, name):
        self.name = name
        self.class_dict = {}
        self.class_list = []

    def add_stu(self, stu):
        # 添加學生至對應字典列表
        self.class_dict[stu.num] = stu
        self.class_list.append(stu)

    def del_stu(self, num):
        # 彈出后刪除
        stu_danchu = self.class_dict.pop(num)
        self.class_list.remove(stu_danchu)

    def sort_stu(self, key, reverse=False):
        # 排序
        self.class_list.sort(key=key, reverse=reverse)

    def show_class(self):
        # 打印
        print(self.name)
        for i in self.class_list:
            print(i)

    def chazhao_stu(self, num):
        return print(self.class_dict.get(num))


# 測試代碼

import random

c1 = Class1('python')

for i in range(10):
    name = 'stu' + str(i)
    num = 100 + i
    age = random.randint(18, 25)
    score = random.randint(70, 100)
    c = Stu(name, num, age, score)
    c1.add_stu(c)

# 展示
c1.show_class()
# 排序
c1.sort_stu(key=lambda s: s.num, reverse=True)
# 查找
c1.chazhao_stu(108)
# 刪除
c1.del_stu(109)
c1.show_class()