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
class Computer:
"""电脑类"""
def __init__(self,brand,color,memory):
self.brand = brand
self.color = color
self.memory = memory
def play_game(self):
print("打游戏")
def write_code(self):
print("写代码")
def see_movie(self):
print("看视频")
cp1 = Computer("戴尔","yellow","16G")
cp1.play_game()
cp1.brand
cp1.color = "pink"
# del cp1.color
cp1.capan = "ssd"
print("添加：",cp1.capan)
attr方法：
class Computer:
"""电脑类"""
def __init__(self,brand,color,memory):
self.brand = brand
self.color = color
self.memory = memory
def play_game(self):
print("打游戏")
def write_code(self):
print("写代码")
def see_movie(self):
print("看视频")
print("获取",getattr(cp1,"color"),getattr(cp1,"brand"),getattr(cp1,"memory"))
setattr(cp1,"brand","lenovo")
setattr(cp1,"cipan","ssd")
setattr(cp1,"color","green")
setattr(cp1,"memory","2g")
print("添加修改后获取",getattr(cp1,"color"),getattr(cp1,"cipan"),getattr(cp1,"brand"),getattr(cp1,"memory"))
# delattr(cp1,"color")
# print("删除后获取",getattr(cp1,"color"),getattr(cp1,"brand"),getattr(cp1,"memory"))报错！
a.创建电脑类的对象，然后通过对象点的⽅方式获取、修改、添加和删除它的属性
b.通过attr相关⽅方法去获取、修改、添加和删除它的属性
2.声明⼀个人的类和狗的类:
狗的属性:名字、颜⾊色、年年龄
狗的⽅方法:叫唤
人的属性:名字、年年龄、狗
人的⽅方法:遛狗
a.创建⼈人的对象⼩小明，让他拥有⼀一条狗⼤大⻩黄，然后让⼩小明去遛⼤大⻩黄
class Dog:
def __init__(self,name = " ",color = "",age = 0):
self.name = name
self.color = color
self.age = age
def shout(self):
print("%s在叫唤"%self.name)
class Person:
def __init__(self,name,age = 0):
self.name = name
self.age = age
self.dog = None
def play_with_dog(self):
if self.dog:
print("%s牵着%s在草地上玩"%(self.name,self.dog.name))
else:
print("没有狗，留自己")
p1 = Person("小明","18")
p1.dog = Dog("旺财","黄色","500")
p1.play_with_dog()
3.声明⼀一个圆类:
class Round:
def __init__(self,radius):
self.radius = radius
def perimeter(self):
return self.radius*3.14*2
def area(self):
return (self.radius)**2*3.14
r1 = Round(100)
perimeter1 = r1.perimeter()
area1 = r1.area()
print("周长为：%s，面积为：%s"%(perimeter1,area1))
4.创建⼀一个学⽣生类:
属性:姓名，年龄，学号
方法:答到，展示学生信息
创建⼀一个班级类:
属性:学⽣，班级名
方法:添加学生，删除学生，点名, 求班上学生的平均年龄
a = []
aaa = {}
class Students:
def __init__(self,information):
self.information = information
def reponse_infor(self):
pass
def show_student_infor(self):
pass
name = input('请输入名称:')
age = input('请输入年龄:')
a.append(["年龄",age])
study_id = input('请输入学号:')
a.append(["学号",study_id])
aa = dict(a)
aaaa = {name:aa}
aaa.update(aaaa)
student = Students(aaa)
class Class:
def __init__(self,student,class_name):
self.student = student
self.class_name = class_name
def add_stu_inf(self):
pass
def changge_stu_info(self):
pass
def average_age(self):
pass
class1 = Class(student,"class11")
import random
class Student():
def __init__(self,name,age = 0,study_id = " "):
self.name = name
self.age = age
self.study_id = study_id
self.inclass = bool(random.randint(0,1))
def reply(self):
print("%s到"%self.name)
def show_info(self):
print("名字：%s，年龄：%s，学号：%s"%(self.name,self.age,self.study_id))
class Class:
def __init__(self,name:str):
self.name = name
self.student = []
self.__creat_id = (self.name + str(x).rjust(3, "0") for x in range(1, 101))
def add_student(self):
#输入信息
name = input("姓名：")
age = int(input("年龄："))
study_id = next(self.__creat_id)
stu1 = Student(name,age,study_id)
self.student.append(stu1)
def del_student(self):
is_exist = False
del_name = input("请输入删除的学生的名字")
for stu in self.student:
if del_name == stu.name:
is_exist = True
stu.show_info()
is_del = input("是否删除：Y/N？：")
if is_del == "Y":
self.student.remove(stu)
print("删除成功")
if not is_exist:
print("这个学生不存在！")
def naming(self):
"""点名"""
for stu in self.student:
print(stu.name)
if stu.inclass:
stu.reply()
def average_age(self):
sum1 = 0
for stu in self.student:
sum1 += stu.age
return sum1 / len(self.student)
def show_student_info(self):
"""显示所有学生"""
for stu in self.student:
stu.show_info()
class1 = Class("py1808")
for i in range(3):
class1.add_student()
#显示班级所有学生的信息
class1.show_student_info()
#删除学生
class1.del_student()
class1.add_student()
class1.show_student_info()