明天学习了无关“类”的操作
# 创立和应用类class Dog(): # 首字母大写代表类 def __init__(self, name, age): # 命名办法旨在防止Python默认办法与一般办法的名称抵触 self.name = name self.age = age self.type = 'Samoye' # 给属性默认值 def sit(self): print(self.name.title() + "is now sitting.") def roll_over(self): print(self.name.title() + " rolled over!") def update_type(self, new_type): self.type = new_type def update_age(self, new_age): # 禁止对年龄的回溯 if new_age >= self.age: self.age = new_age else: print("You can't roll back the age") def increment_age(self, add_age): # 通过办法对属性的值进行递增 self.age += add_age# 创立实例my_dog = Dog('willie', 6)print("My dog's name is " + my_dog.name.title() + ".")print("My dog is " + str(my_dog.age) + " years old.")print(my_dog.type)my_dog.sit()my_dog.roll_over()# 间接批改属性值my_dog.type = 'Hashiqi'print(my_dog.type)# 通过办法批改属性的值my_dog.update_type('Chaiquan')print(my_dog.type)# 通过办法对属性的值进行递增my_dog.increment_age(5)print(my_dog.age)# 子类对父类的继承class Cat(Dog): def __init__(self, name, age): super().__init__(name, age) # 帮忙父类和子类分割起来，父类又称superclass self.color = 'white' # 额定定义子类的属性 def describe_color(self): print("This cat's color is " + self.color) # 重写父类 def sit(self): print(self.name.title() + " can't be sitting.")my_cat = Cat('Tesla', 2)print(my_cat.name)my_cat.describe_color()my_cat.sit()""""援用模块中类的办法和援用函数相似，但应留神，应用该模块的程序都必须应用更具体的文件名"""整体输入后果如下：
My dog's name is Willie.
My dog is 6 years old.
Samoye
Willieis now sitting.
Willie rolled over!
Hashiqi
Chaiquan
11
Tesla
This cat's color is white
Tesla can't be sitting.