Static and Non Static Method in Python | Class Method in Python

 Static and Non Static Method in Python | Class Methods in Python

Methods:

• Methods are used to define a business logic
• There are three types of methods in python

A. Non-static Method

B. Class Method

C. Static Method

Non-static Method:-

• Non-static methods are object level
• Non-static method should have a first argument (Self)

Note:- We can give any other argument name instead of self

Class Method:-

• Class methods are class level
• Use to have all the class level variable
• It should have decorator @Class method
• Must and should have one argument (cls)

Note:- We can give another value name instead of cls

Static Method:-

• A static method is used to define small utility actions

Example:

1. Addition of a number
2. Subtraction of a number etc.

• · It should have decorator @Static method

Example:

Question:- How to access the static method?

Question: Where we can call the static variable?

Answer: We can call under constructor, non-static method, class method, and static method as well.

Non-static method:-

A static variable can be called inside a constructor, non-static method, class method, and static method using the class name.

• It is possible to change the static variable values inside a constructor
• It is possible to change the static variable values inside a non-static method
• Similarly, we can change the static variable value inside a non-static method, class method, and static method.

·  Non-static variables cannot access inside a class method or static method using self.

Question: - List the differences between constructor and method?

Constructor	Method
Identifier as __init__	Any valid identifier name
Never returns values	It will return a value (Single or multiple)
Automatically executed (When creating an object)	Should be called explicitly
Object-level	Object and class level

Question: - Write a python program to print how many objects were created for a class?