Python classmethod()

Converts a given function into a class method.

Syntax

classmethod(function)

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Example 1

Use classmethod() to create the Codecademy class method:

class Student:
  name = "Codecademy"

  def print_name(obj):
    print("Welcome to...", obj.name)

Student.print_name = classmethod(Student.print_name)

Student.print_name()

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Codebyte Example

Here’s an example to illustrate the usage of classmethod():

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Output for the above code is:

Instance method called by Object 1
Class method called. Total instances created: 2
Class method called. Total instances created: 2
Class method called. Total instances created: 2

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In the above example, a class called MyClass is defined with a class attribute count and two methods: instance_method and class_method.

The instance_method is a regular instance method that can access instance-specific attributes. It is called using an instance of the class.

The class_method is a class method decorated with classmethod(). It takes the class itself (cls) as the first parameter instead of the instance (self). It can access and modify class-level attributes, such as count. It can be called using the class name or an instance of the class.