This Python peculiarity can lead to some unexpected behavior of your programs. — Say, you want a function that appends some data to a list. And if the list is not passed, then appends the same data to a newly created list. What would be the obvious and naive way to go? Sure, why not use default arguments here? …

Passing a QR code as an SVG code This tiny project will generate a QR code for any text and pass it to the HTML template as an SVG code. SVG is a very convenient medium for URLs or other text. This small demo demonstrates a few things: How to…

How much faster is your app with indexes? — Even “Senior” developers often forget to use indexes in Django. You can’t imagine how faster it can get if you simply add two lines of code into your model! In this article we will take measurements together: with and without indexes. Setup Our patient will be a small Django application with…

Step by step guide to writing Tetris in Python with PyGame In this tutorial, we will write a simple Tetris using the PyGame library in Python. The algorithms inside are pretty simple but can be a little challenging for the beginners. We will not concentrate on PyGame mechanics too much…

Bonus: from_json and to_json methods for your classes Introduction As a Python developer, you have likely come across classes and object-oriented programming. But when working with classes, you might have encountered classmethod and staticmethod. These two concepts can be confusing, especially for beginners. In this article, we will demystify class and…

Why don’t we always use public? Introduction Object-oriented programming (OOP) has been a dominant programming paradigm for several decades now. One of its core principles is encapsulation, which is the bundling of data and methods that operate on that data within a single unit, typically a class. Encapsulation promotes the idea…

How will ChatGPT 4 and above be different from ChatGPT 3 Here is what I expect from the next generations of ChatGPT. ChatGPT 4 (boring) AI language models have come a long way since their inception, and with each iteration, they become more sophisticated and better at understanding human language. …

What and why are microservices The purpose of this article is to provide a clear understanding of microservices and how they differ from monolithic applications. Using a straightforward example, we will illustrate the fundamental principles of microservices, and towards the end of the article, we will delve into more complex…

Parametrized tests in Python with PyTest Pytest is a powerful and feature-rich testing framework for Python. One of its most powerful features is its ability to easily build complex test suites by reusing test functions. …