Python @staticmethod (original) (raw)

Last Updated : 21 Nov, 2019

There can be some functionality that relates to the class, but does not require any instance(s) to do some work, static methods can be used in such cases. A static method is a method which is bound to the class and not the object of the class. It can’t access or modify class state. It is present in a class because it makes sense for the method to be present in class. A static method does not receive an implicit first argument.

Syntax:

class C(object): @staticmethod def fun(arg1, arg2, ...): ...

Returns: a static method for function fun.

When function decorated with @staticmethod is called, we don’t pass an instance of the class to it as it is normally done with methods. It means that the function is put inside the class but it cannot access the instance of that class.

Example #1:

class Maths():

`` @staticmethod

`` def addNum(num1, num2):

`` return num1 + num2

if __name__ = = "__main__" :

`` res = Maths.addNum( 1 , 2 )

`` print ( "The result is" , res)

Output:

The result is 3

Example #2:

class Person:

`` def __init__( self , name, age):

`` self .name = name

`` self .age = age

`` @staticmethod

`` def isAdult(age):

`` return age > 18

if __name__ = = "__main__" :

`` res = Person.isAdult( 12 )

`` print ( 'Is person adult:' , res)

`` res = Person.isAdult( 22 )

`` print ( '\nIs person adult:' , res)

Output:

Is person adult: False

Is person adult: True