9+ Python Self 使い方 References

Python cls vs self Knowing About References in Methods Python Pool from www.pythonpool.com

Introduction

Python is a popular programming language that is used for various applications such as web development, data analysis, and artificial intelligence. One of the unique features of Python is the self keyword. In this article, we will explore the self keyword in Python and its usage.

Understanding Self in Python

In Python, self is a reference to the instance of a class. It is used to access the attributes and methods of the class. When a method is called on an object, the object is automatically passed as the first argument to the method. This first argument is called self.

Using Self in Class Definition

To use self in a class definition, we need to define the class and its attributes. Here is an example:

class Car:

def __init__(self, make, model):

self.make = make

self.model = model

Using Self in Class Methods

When we define methods in a class, we need to use the self keyword to access the instance variables. Here is an example:

class Car:

def __init__(self, make, model):

self.make = make

self.model = model

def get_make(self):

return self.make

Using Self in Class Instance

To create an instance of a class, we need to use the class name and pass the arguments to the __init__ method. Here is an example:

car1 = Car('Toyota', 'Corolla')

Conclusion

The self keyword in Python is a powerful feature that allows us to access the instance variables and methods of a class. By using self, we can create more efficient and effective Python programs. We hope this article has provided you with a comprehensive guide on how to use self in Python.