Python Class 101: Everything You Need to Know Before Getting Started

Python is a popular programming language that is widely used for a variety of applications, from web development to data analysis. One of the key features of Python is its support for object-oriented programming. This allows developers to create classes, which are templates for creating objects that can have their own attributes and methods.

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If you are new to Python and are interested in learning more about classes, then this article is for you. In this Python Class 101 guide, we will cover everything you need to know before getting started with classes in Python.

What is a class in Python?

A class in Python is a blueprint for creating objects. It defines the attributes and methods that an object will have. For example, if you were creating a class for a car, you might define attributes such as the make, model, and year of the car, as well as methods for starting the car and accelerating.

How to create a class in Python

To create a class in Python, you use the `class` keyword followed by the name of the class. Here is an example of a simple class in Python:

“` python

class Car:

def __init__(self, make, model, year):

self.make = make

self.model = model

self.year = year

def start(self):

print(“The car has started”)

def accelerate(self):

print(“The car is accelerating”)

“`

In this example, we have defined a class called `Car` with attributes for the make, model, and year of the car, as well as methods for starting the car and accelerating.

How to create objects from a class

Once you have defined a class in Python, you can create objects from that class using the class name followed by parentheses. Here is an example of creating an object from the `Car` class:

“` python

my_car = Car(“Toyota”, “Corolla”, 2020)

“`

In this example, we have created an object called `my_car` from the `Car` class with the make “Toyota”, model “Corolla”, and year 2020.

How to access attributes and methods of an object

Once you have created an object from a class, you can access its attributes and methods using dot notation. Here is an example of accessing the attributes and methods of the `my_car` object:

“` python

print(my_car.make)

print(my_car.model)

print(my_car.year)

my_car.start()

my_car.accelerate()

“`

In this example, we are printing the make, model, and year attributes of the `my_car` object, as well as calling the `start` and `accelerate` methods.

In conclusion, classes are an important feature of Python that allow you to create objects with their own attributes and methods. By following the steps outlined in this Python Class 101 guide, you can start creating classes and objects in Python. Practice creating your own classes and objects to get a better understanding of how classes work in Python.