Python面向对象 OOP

类的定义

class MyClass:
	pass

class People:
    def __init__(self, name):
        self.name = name

    def say(self):
        print(f"Hello {self.name}")

zs = People("zs")
zs.say()

受保护的属性和私有属性

class People:
    def __init__(self, name，age):
        self.name = name
				self._protect_var = 10 #受保护的属性： 可以修改和访问 仅仅用做提醒
				self.__private_var = 10 # 私有属性 不可直接访问和修改
				self.__age = age
    def say(self):
        print(f"Hello {self.name}")

	# property 装饰器使用
		@property
		def age(self):
			# TODO 格式化操作...
			return self.__age

		@age.setter
		def age(self,age):
			# TODO 校验合规性
			self.__age = age

继承和多态

class Animal:
	def eat(self):
		print("Animal is eating")


class Bird(Animal):
	def eat(self):
		print("Bird eat")

class Dog(Animal):
	pass

b = Brid()
b.eat()

D = Dog()
d.eat()

模块与包

• 新建文件夹(包): 包内需要有 __init__.py文件

import sys

print(sys.path)