Python学习笔记2：类的定义和继承

    成员变量

# 所有类的基础object

#  私有方法和变量使用__开头

例如：定义一个鸟类

class Bird(object):
    __have_feather = True  # 私有属性：是否有羽毛 
    way_of_reproduct = "egg" # 公有属性：繁殖方式 

    def move(self, dx, dy):  # 公有方法
        position = [0,0]
        position[0] = position[0] + dx
        position[1] = position[1] + dy
        return position

class Chicken(Bird):
    way_of_move = "walk"  # 添加一个公有属性 

class Oriole(Bird):
    way_of_move = "fly"  # 添加一个公有属性 

class happyBird(Bird):
    def __init(self, words): # 构造函数
        print "We are happy birds,", words

summer = Bird()
print "after move:",summer.move(5,8)
happy = happyBird()

class Human(object):
    laugh = "hahaha" # 公有属性
    def __init__(self, gender): # 构造函数
        self.gender = gender # 定义并初始化公有属性
    def __show_laugh(self): # 私有方法
        print self.laugh
    def show_laugh_twice(self): # 公有方法
        self.show_laugh() # 调用私有方法
        self.show_laugh() # 调用私有方法

man = Human("male")
man.show_laugh_twice()
print man.gender

附录：

Python学习笔记2：类的定义和继承

原文：http://blog.csdn.net/xufeng0991/article/details/39585139