@classmethod means:

when this method is called, we pass the class as the first argument instead of the instance of that class. This means you can use the class and its properties inside that method rather than a particular instance.

means:

when this method is called, we don't pass an instance of the class to it .This means you can put a function inside a class but you can't access the instance of that class (this is useful when your method does not use the instance).

#!/usr/bin/python#coding:utf-8class Person:    def __init__(self):            print "init"    @staticmethod    def s_sayHello(hello):        print "fun:s_sayhello %s" %hello    @classmethod    def c_introduce(clazz,hello):        clazz.s_sayHello(hello)    def hello(self,hello):        self.s_sayHello(hello)   def main():    print "Person.s_sayHello:"    Person.s_sayHello("Person:s_sayHello!")    print "Person.c_introduce"    Person.c_introduce("Person:c_introduce!");print "*"* 20;p=Person()    p.s_sayHello("p:s_sayHello!")    p.c_introduce("p:c_introduce!")    p.hello("p:hello!")if __name__=='__main__':    main()输出Person.s_sayHello:fun:s_sayhello Person:s_sayHello!Person.c_introducefun:s_sayhello Person:c_introduce!********************initfun:s_sayhello p:s_sayHello!fun:s_sayhello p:c_introduce!fun:s_sayhello p:hello!