python类基础

#coding:gbk

class Person():
    def __init__(self,age,gender,height,weight):
        self.age = age
        self.gender = gender
        self.height = height
        self.weight = weight

    def run(self):
        print("体重为%s的人在跑步" % self.weight)

deo = Person(,'man','170cmm','70kg')
deo.run()

类实例 =  类对象
函数 = 方法
一个类对象（类实例）可以调用类实例属性和类实例方法

 

类继承

#coding:gbk
class Person:

    can_eat = True

    def __init__(self, age, gander):
        self.age = age
        self.gander = gander

    def speck(self, words):
        print('I said :%s' % words)

    def run(self):
        print('run')

class Father(Person):

    def __init__(self, age, gander):
        Person.__init__(self, age, gander)

    def run(self):
        print('我跑不动了')

class Son(Father):

    def __init__(self, age, gander, height):
        Father.__init__(self, age, gander)
        self.height = height

    def eat(self):
        print('我想吃糖果')

son = Son(, 'boy', '110cm')
son.run()
son.speck('我想吃')

1： 子类默认继承父类的类实例方法
2： 类实例属性继承需要在__init__(self)中加上
     FatherClass. __init__(self)

 

类的方法

#coding: gbk

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

    def ord_func(self):

        print('实例方法')

    @classmethod
    def class_func(cls):
        print('类方法')

    @staticmethod
    def static_func():
        print('静态方法')

f = T('jack')
f.ord_func()
#Foo.ord_func(f)

T.class_func()
#f.class_func()

T.static_func()

继承

#coding: gbk
class People:
    def __init__(self,name,age,weight):
        self.name = name
        self.age = age
        self.__weight = weight

    def speak(self):
        print('%s 说: 我 %d 岁...' %(self.name,self.age))

class Son(People):
    def __init__(self,name,age,weight,grade):
        super(Son,self).__init__(name=name,age=age,weight=weight)    #等同于People.__init__(self, name, age, weight)

##使用super()函数！最常见的就是通过super调用父类的实例化方法__init__！  语法：super(子类名, self).方法名()，需要传入的是子类名和self，调用的是父类里的方法，按父类的方法需要传入参数

        self.grade = grade

    def speak(self):
        print("%s 说: 我 %d 岁了，我在读 %d 年级" % (self.name, self.age, self.grade))

s = Son('jacky',18,100,2)
s.speak()