What are classes and instances

Defines a people class in fact self, is the instance itself! When you instantiate it, Python automatically passes the instance itself through the self parameter.

class people (object):

def __init__(self,name): #构造函数 构造方法==初始化方法    self.name=name #这是此类的成员属性def saysome(self): #类的方法    print("what are you doing now ?",self.name)def eat(self,food,many):    print("%s say:the %s is very nice!%s"%(self.name,food,many))

P1=people (' Wang Yu ') #实例化后的对象叫 example!!
P2=people (' Ning Cheng ')

P1.saysome () #执行
P2.saysome ()
P1.eat (' root ', ' att ') '

What are classes and instances