# 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:
def __init__(self, brand='Asus', color='blank', memory_size='8G'):
self.brand = brand
self.color = color
self.memory_size = memory_size
def play_com_game(self):
print('正在用%s的%s的%s电脑在打游戏' % (self.color, self.memory_size, self.brand))
def write_code(self):
print('正在用%s的%s的%s电脑在写代码' % (self.color, self.memory_size, self.brand))
def watch_video(self):
print('正在用%s的%s的%s电脑在看视频' % (self.color, self.memory_size, self.brand))
def __str__(self):
return 'brand: ' + self.brand + 'color: ' + self.color + 'm_size: ' + self.memory_size
# 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
computer1 = Computer()
# 获取属性
print('brand:', computer1.brand, 'color:', computer1.color, 'm_size:', computer1.memory_size)
# 修改属性
computer1.brand = 'Think_pad'
computer1.color = 'white'
computer1.memory_size = '16G'
print('brand:', computer1.brand, 'color:', computer1.color, 'm_size:', computer1.memory_size)
# 添加属性
computer1.thickness = "100mm"
print('thickness:', computer1.thickness)
# 删除属性
del computer1.thickness
print(computer1)
# b.通过attr相关方法去获取、修改、添加和删除它的属性
# 获取属性
print(getattr(computer1, 'brand'), getattr(computer1, 'color'), getattr(computer1, 'memory_size'))
# 修改属性
setattr(computer1, 'brand', 'Alien')
setattr(computer1, 'color', 'gray')
setattr(computer1, 'memory_size', '32G')
print(getattr(computer1, 'brand'), getattr(computer1, 'color'), getattr(computer1, 'memory_size'))
# 添加属性
setattr(computer1, 'age', '18')
setattr(computer1, 'thickness', '100mm')
print(getattr(computer1, 'brand'), getattr(computer1, 'color'), getattr(computer1, 'memory_size'), computer1.thickness, computer1.age)
# 删除属性
delattr(computer1, 'age')
delattr(computer1, 'thickness')
# 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
class Dog:
def __init__(self, name, color, age):
self.name = name
self.color = color
self.age = age
def bark(self):
print("%s正在叫唤" % self.name)
class Man:
def __init__(self, name, age, dog):
self.name = name
self.age = age
self.dog = dog
def took_the_dog(self):
print("%s正在遛%s" % (self.name, dog.name))
# 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
dog = Dog('阿黄', '黄色', '2')
person = Man('小明', '18', dog.bark())
person.took_the_dog()
# 3.声明一个矩形类:
# 属性: 长、宽
# 方法:计算周长和面积
class Rectangle:
"""
矩形类
"""
def __init__(self, length, width):
self.length = length
self.width = width
def calc_perimeter(self):
"""求矩形周长"""
length = self.length
width = self.width
perimeter = (length + width) * 2
print(perimeter)
def calc_area(self):
"""
求矩形面积
:return:面积
"""
length = self.length
width = self.width
area = length * width
print(area)
# a.创建不同的矩形，并且打印其周长和面积
rectangle1 = Rectangle(2, 5)
rectangle2 = Rectangle(4, 5)
rectangle1.calc_perimeter()
rectangle1.calc_area()
rectangle2.calc_perimeter()
rectangle2.calc_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
class Student:
"""
学生类
属性:姓名、年龄、学号、成绩
方法:答到，展示学生信息
"""
def __init__(self, name, age, stu_id, score):
self.name = name
self.age = age
self.stu_id = stu_id
self.score = score
def answer(self):
print('%s: 到' % self.name)
def show_stu_info(self):
print('姓名:' + self.name + ' 年龄:' + self.age + ' 学号:' + self.stu_id + ' 成绩:' + str(self.score))
stu1 = Student('小明', '20', '001', 100)
stu1.show_stu_info()
class Class:
"""
班级类
功能:添加学生，删除学生，点名，获取班中所有学生的平均值，获取班中成绩最好的学生
"""
def __init__(self, team, students=[]):
self.students = students
self.team = team
stu = ''
def add_stu(self, name, age, stu_id, score):
stu = Student(name, age, stu_id, score)
self.students.append(stu)
def delete_stu(self, name):
for stu in self.students:
if name == stu.name:
self.students.remove(stu)
return
else:
print('没有此学生')
return
def average(self):
sum = 0
for stu in self.students:
sum += stu.score
average_num = sum/len(self.students)
print(average_num)
def max_num(self):
max1 = self.students[0].score
name = self.students[0].name
for num in self.students:
if num.score > max1:
max1 = num.score
name = num.name
print(max1, name)
def call_name(self, name):
for name_x in self.students:
if name_x.name == name:
print("%s在" % name)
return
else:
print("此班级没有%s" % name)
return
c1 = Class(1)
c1.add_stu("小王", 20, 222, 100)
c1.add_stu("小明", 30, 33, 90)
c1.average()
c1.max_num()
c1.call_name('小王')
c1.delete_stu('小王')
c1.call_name('小王')
