Explain python static variables

Published July 26, 2022

In Python, a static variable is one that is declared inside a specified class but not within a function. This variable can be accessed only via the class in which it is declared. A static variable is often referred to as a class variable. Because these variables are class-specific, they cannot affect the state of an object.

In this article, we are going to learn:

  • How to create static variables using the staticmethod()

  • How to create static variables using the @staticmethod

 

How to create static variables using the staticmethod()

In Python, staticmethod() returns a static variable for a given function. However, these variables are now considered absolute, so using this method is no longer recommended. 

To create variables, we first create a class called StaticVar. Using the staticmethod() function, we declare a variable called random as a static variable outside the class. By using the StaticVar class, we can directly call random().

Example

class StaticVar:

    def random(a):

        print(a)

        print("My static variable.")

StaticVar.random = staticmethod(StaticVar.random)

StaticVar.random("a Random class.")

 

Output

Explain python static variables 1

 

 

How to create static variables using the @staticmethod

A static variable can be defined using @staticmethod, which is the most commonly used and modern method. In Python, @staticmethod is a built-in decorator. In Python, a decorator adds new functionality to an existing object without changing its structure. Python uses the @staticmethod decorator to define a static variable inside a class.

Example

class StaticVar:

    @staticmethod

    def random(a):

        print(a)

        print("I love Python Static variables.")

StaticVar.random("random class Created.")

 

Output

Explain python static variables 2