Note: Each day this week I'm going to republish one of my most popular posts. My hope is that people who missed them the first time might find them useful now. This post, on "classes" and Object Oriented Programming remains my most popular post of all time. I've gotten hundreds of emails about this post alone. Many have found it an accessible introduction to classes and OOP, both in Python and in general.
class is a fundamental building block in Python. It is the underpinning
for not only many popular programs and libraries, but the Python standard library as
well. Understanding what classes are, when to use them, and how they can be
useful is essential, and the goal of this article. In the process, we'll explore
what the term Object-Oriented Programming means and how it ties together with