class Person(object):def __init__(self,name,sex):self.name=nameself.sex=sex
p1=Person('刚田武','男')
print(p1.name,p1.sex)

def talk(self):print('hello,%s'%self.name)
def __init__(self,name,age):self.name=nameself.age=age
Foo=type('Foo',(object,),{'function':talk,'__init__':__init__})     #(object,)中的逗号不能丢,因为此处需要的参数是元组，如果不加逗号就只是一个值，('Foo')效果等同于'Foo'，都是值
obj=Foo('胖虎',22)
obj.function()

class People(object): #新式类def __init__(self,name,age):self.name = nameself.age = ageself.friends = []print("in the people class ")def eat(self):print("%s is eating..." % self.name)def talk(self):print("%s is talking..." % self.name)def sleep(self):print("%s is sleeping..." % self.name)
class Relation(object):def make_friends(self,obj):print("%s is making friends with %s" % (self.name,obj.name))self.friends.append(obj.name)
class Man(People,Relation):def __init__(self,name,age,money):super(Man,self).__init__(name,age) #等效于：People.__init__(self,name,age)self.money  = moneyprint("%s 一出生就有%s money" %(self.name,self.money))def sleep(self):People.sleep(self)print("man is sleeping")m1 = Man("刚田武",22,100)
w1=Man('朱二娃',20,100)
m1.sleep()
m1.make_friends(w1)
w1.name = "胖虎"
print(m1.friends[0])

继承

class Animal(object):def __init__(self,name):self.name=namedef animal_talk(obj):   #此处实现了对Dog和Cat类里talk方法的调用obj.talk()
class Dog(Animal):def talk(self):print('%s****woof,woof!***%s'%(self.name,'aaa'))
class Cat(Animal):def talk(self):print('%s****miow,miow***%s'%(self.name,'aaa'))
d=Dog('朱二娃')
c=Cat('刚田武')
d.talk()    #一般调用方式
c.talk()
Animal.animal_talk(d)   #多态调用方式
Animal.animal_talk(c)

class Animal(object):name='abc'def __init__(self,name):self.name=name@classmethoddef eat(obj):print(obj.name)     #此处的obj是d,name是'abc'，是类的变量，不是对象d的变量'朱二娃'print('%s is eating'%obj.name)def animal_talk(obj):obj.talk()
class Dog(Animal):def talk(self):print('%s****woof,woof!***%s'%(self.name,'aaa'))
d=Dog('朱二娃')
d.eat()

class Animal(object):""" 描述类信息 """# name='abc'def __init__(self,name):self.name=name@propertydef eat(obj):       #此处默认传递的实参是对象d本身print('%s is eating'%obj.name)def animal_talk(obj):obj.talk()
class Dog(Animal):def talk(self):print('%s****woof,woof!***%s'%(self.name,'aaa'))
d=Dog('朱二娃')
d.eat   #不用加括号，就像是调用属性值一样，实际上是把对象d本身传递给属性方法
print(Animal.__doc__)

class Dog:def __init__(self,name):self.name=namedef __del__(self):print('对象被删除，%s消失'%self.name)
aaa=Dog('二哈')
del aaa

对象被删除，二哈消失

class Dog:def __init__(self,name):self.name=namedef __call__(self, *args, **kwargs):print('执行call方法')def __del__(self):print('对象被删除，%s消失'%self.name)
aaa=Dog('二哈')
aaa()

执行call方法
对象被删除，二哈消失