2018-10-1--day14Homework

1. 声明一个电脑类
   属性：品牌、颜色、内存大小
   方法：打游戏、写代码、看视频

a.创建电脑类的对象，然后通过对象点的方式获取、修改、添加和删除它的属性
b.通过attr相关方法去获取、修改、添加和删除它的属性

class Pc:
    def __init__(self,brand,color,storage):
        self.brand = brand
        self.color = color
        self.storage = storage
    def play_game(self):
        print('玩游戏')
    def type_code(self):
        print('敲代码')
    def watch_video(self):
        print('看视频')
pc1 = Pc('asus','silver','64')
print(pc1.brand)
pc1.price = '998'
print(pc1.price)
pc1.brand = 'lenovo'
print(pc1.brand)
del pc1.color
# print(pc1.color)
print(getattr(pc1,'storage'))
setattr(pc1,'market_time',2018)
print(pc1.market_time)
setattr(pc1,'price',4399)
print(pc1.price)
delattr(pc1,'brand')
# print(pc1.brand)

2.声明一个人的类和狗的类:
狗的属性:名字、颜色、年龄
狗的 法:叫唤
人的属性:名字、 年龄、狗
人的方法:遛狗
a.创建人的对象名字叫小明，让他拥有一条狗 ，然后让小明去遛狗

class Dog:
    def __init__(self,d_name,d_color,d_age):
        self.name = d_name
        self.color = d_color
        self.age = d_age
    def bark(self):
        print('汪汪汪')
class Person:
    def __init__(self,p_name,p_age):
        self.name = p_name
        self.age = p_age
        self.dog = getattr(dog1,'name')
    def walk_dog(self):
        print('%s正在遛%s'% (self.name,self.dog))
dog1 = Dog('大黄','黑色',1)
print(dog1.name)
print(dog1.color)
print(dog1.age)
person1 = Person('小明',18)
person1.walk_dog()

3.声明一个矩形类:
属性: 长、宽
方法:计算周长和面积
a.创建不同的矩形，并且打印其周长和面积

class Rectangle:
    def __init__(self,length,width):
        self.length = length
        self.width = width
    def circu(self):
        circu = (self.length+self.width)*2
        print(circu)
    def area(self):
        area = self.length * self.width
        print(area)

rec1 = Rectangle(60,5)
rec1.circu()
rec1.area()

4.创建一个学生类: ()
属性:姓名，年龄，学号，成绩
方法:答到，展示学生信息
创建一个班级类: 属性:学生，班级名
方法:添加学生，删除学生，点名, 获取班级中所有学生的平均值， 获取班级中成绩最好的学生

    def __init__(self,name,age,stu_num,scores):
        self.name = name
        self.age = age
        self.stu_num = stu_num
        self.scores = scores
    def sign_in(self):
        print("%s已到"% self.name)
    def show_stu(self):
        print(self.name,self.age,self.stu_num,self.scores)
class Class:

    def __init__(self,class_num,class_stu):
        # pass
        # self.class_num = class_num
        # self.class_stu = class_stu
    def add_stu(self):
        global class_stu
        self.stu = getattr(stu1,'name')
        self.age = getattr(stu1,'age')
        self.stu_num = getattr(stu1,'stu_num')
        self.scores = getattr(stu1,'scores')
        # new_dict = {'name':stu,}

        new_dict = {'name':self.stu,'age':self.age,'stu_num':self.stu_num,'scores':self.scores}

        class_stu.append(new_dict)
        print(class_stu)
    # def del_stu(self):
    #     global class_stu
    #     name = input('请输入要删除学生姓名:')
    #     for x in class_stu:
    #         if name == class_stu[x]['name']:
    #             delattr(class_stu[x])
stu1 = Students('hqf',18,666,100)
stu1.show_stu()
# class1 = Class('py1807','stu1')
# class1 = Class
class1 = Class('stu1')

class1.add_stu(stu1)