In programming, we can divide code architecture into two main styles, called paradigms.
Functional programming is a style of writing code where everything is done using functions. This style works well for scripting, and it is often used for things like data processing, statistics, or math problems. However, when a program becomes big and complex, this style can become harder to manage, because it is not always easy to organize and reuse the code.
Object-Oriented Programming (OOP) is a programming paradigm. It is usually the main style used to build large, professional, and commercial software.
OOP is an important part of almost every piece of software that is built commercially with Python.
Not using OOP techniques in software development is like a taekwondo fighter who only uses hand techniques, even though most of the important techniques in taekwondo are kicks. In the same way, if you skip OOP, you are missing many of the most useful tools in programming.
Many programmers struggle for a long time when they first start learning Object-Oriented Programming, and in the end, they still do not fully understand it.
I had a hard time too when I was learning OOP. Even though the ideas were simple, I often felt confused about why things worked the way they did. Looking back, the real problem was that I had not yet learned how to think in an object-oriented way.
The most important thing you need to learn in this course is object-oriented thinking, and the only way to build this skill is through many examples.
In this course, I have tried my best to give many good examples for every OOP concept, so that you can build a strong, correct way of thinking about object-oriented programming.
The topics in this course are closely connected to each other. Sometimes, while reading one part, a question may come to your mind that is not answered right there. Please keep reading, because your question will likely be answered in a later section. Sometimes I had to leave the explanation of certain topics for later parts, just to keep the course organized and easy to follow.
Even learning just 30 to 40 percent of the basic ideas in this course will help you handle most of the common OOP needs in commercial software.
After finishing this course, you will be ready to learn about design patterns, which are one of the most important topics in programming.
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