#-*- coding：utf-8 -*-
class A:
    def __init__(self,name):
        self.name=name
    @staticmethod
    def staticfun():
        print("this is static function")
    @classmethod
    def classfun(cls):
        print("this is class function")
    def entityfun(self):
        print("this is a entity function"
 
)
AA=A("AA")
AA.staticfun()
A.staticfun()
A.classfun()
AA.classfun()
AA.entityfun()
#會報錯，只能用例項化物件來呼叫
A.entityfun()

實驗結果：

/usr/bin/python3.5 /home/liusenubuntu/PycharmProjects/sentence/pythonlearn/staticfunction.py
this is static function
this is static function
this is class function
this is class function
 

this is a entity function
Traceback (most recent call last):
  File "/home/liusenubuntu/PycharmProjects/sentence/pythonlearn/staticfunction.py", line 19, in <module>
    A.entityfun()
TypeError: entityfun() missing 1 required positional argument: 'self'

Process finished with exit code 1

其中cls是類變數，self是例項化物件，例項化方法只能用例項化物件呼叫，也可以傳入例項化物件引數。