How to define python class method

This article introduces the relevant knowledge of "how to define python methods". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Define

1. The definition of class method needs the help of decorator.

2. When defining class methods, you need to add decorations @ classmethod before the methods.

Class class:

@ classmethod def class method (cls): pass

Be careful

3. The first parameter of a class method is usually named cls.

Represents the current class itself. We can refer to class properties or other class methods through this parameter.

Properties of this type can be used in category methods, but object properties of this type cannot be used. Because class methods belong to categories and object properties belong to objects, no objects may be created when using class methods.

Example

Import random class Char: letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' digits =' 0123456789' @ classmethod def random_letter (cls): return random.choice (cls.letters) @ classmethod def random_digits (cls): return random.choice (cls.digits) "how to define python class methods" ends here, thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!