Classes Python Tutorial



Welcome to another Python 3 basics tutorial. This tutorial is going to cover the very basics of classes in Python. For the most part, I just want you to just understand how to read and understand a class' workings. You can think of classes as groupings of functions, usually. Classes quickly work their way into "intermediate" programming, so hopefully I can just help you understand how they work and how to follow code that uses them.

Classes are the backbone to Object Oriented Programming, or OOP. As you get comfortable with Python, classes can become an absolutely integral part of our programs.

Here is the sample code to supplement the video tutorial:

class calculator:
    
    def addition(x,y):
        added = x + y
        print(added)
        
    def subtraction(x,y):
        sub = x - y
        print(sub)

    def multiplication(x,y):
        mult = x * y
        print(mult)

    def division(x,y):
        div = x / y
        print(div)

Here are some examples using the above code in the interpreter:

>>> calculator.subtraction(5,8)
-3
>>> calculator.multiplication(3,5)
15
>>> calculator.division(5,3)
1.6666666666666667
>>> calculator.addition(5,2)
7
>>>

Hopefully that helps to break the ice when it comes to Python 3 classes!

Classes are used for Object Oriented Programming, or OOP. If you'd like to learn more about the intricacies of classes and OOP, then check out my object oriented programming (OOP) crash course tutorial.

The next tutorial:





  • Python Introduction
  • Print Function and Strings
  • Math with Python
  • Variables Python Tutorial
  • While Loop Python Tutorial
  • For Loop Python Tutorial
  • If Statement Python Tutorial
  • If Else Python Tutorial
  • If Elif Else Python Tutorial
  • Functions Python Tutorial
  • Function Parameters Python Tutorial
  • Function Parameter Defaults Python Tutorial
  • Global and Local Variables Python Tutorial
  • Installing Modules Python Tutorial
  • How to download and install Python Packages and Modules with Pip
  • Common Errors Python Tutorial
  • Writing to a File Python Tutorial
  • Appending Files Python Tutorial
  • Reading from Files Python Tutorial
  • Classes Python Tutorial
  • Frequently asked Questions Python Tutorial
  • Getting User Input Python Tutorial
  • Statistics Module Python Tutorial
  • Module import Syntax Python Tutorial
  • Making your own Modules Python Tutorial
  • Python Lists vs Tuples
  • List Manipulation Python Tutorial
  • Multi-dimensional lists Python Tutorial
  • Reading CSV files in Python
  • Try and Except Error handling Python Tutorial
  • Multi-Line printing Python Tutorial
  • Python dictionaries
  • Built in functions Python Tutorial
  • OS Module Python Tutorial
  • SYS module Python Tutorial
  • Python urllib tutorial for Accessing the Internet
  • Regular Expressions with re Python Tutorial
  • How to Parse a Website with regex and urllib Python Tutorial
  • Tkinter intro
  • Tkinter buttons
  • Tkinter event handling
  • Tkinter menu bar
  • Tkinter images, text, and conclusion
  • Threading module
  • CX_Freeze Python Tutorial
  • The Subprocess Module Python Tutorial
  • Matplotlib Crash Course Python Tutorial
  • Python ftplib Tutorial
  • Sockets with Python Intro
  • Simple Port Scanner with Sockets
  • Threaded Port Scanner
  • Binding and Listening with Sockets
  • Client Server System with Sockets
  • Python 2to3 for Converting Python 2 scripts to Python 3
  • Python Pickle Module for saving Objects by serialization
  • Eval Module with Python Tutorial
  • Exec with Python Tutorial