pip install BDD? There are two popular libraries that help writing BDD specifications in Python - pytest-bddand behave. Both are popular, actively maintained and feature-complete. I worked with b...
Welcome to the second post from the GRASP series. GRASP stands for General Responsibility Assignment Software Principles. It is a great aid for Object-Oriented Design (but not really exclusive for...
This is a follow-up post to Stop naming your Python modules "utils". This time, let's see different options on organizing utility code. What is utility code? It is code that is created as a s...
tl;dr Popular Python web frameworks have less significant differences than it appears. Then, there's Django which makes all competition look micro. Even given the rising popularity of FastAPI, I s...
Welcome to the first post from the GRASP series. GRASP stands for General Responsibility Assignment Software Principles. It is a great aid for Object-Oriented Design (but not really exclusive for ...
Exceptions are a standard way of signalling errors in Python. If you have ever written some code in this language, I bet you saw at least a couple of them. :) Python has quite a few built-in excep...
The problem One antipattern I see over and over again in OOP Python code (e.g. with service layers in Django) is mutating attributes from the outside of a given object: # more like pseudocode ...
Batteries included can give you headache unittest.mock.[Magic]Mock and unittest.patch are powerful utilities in the standard library that can help us in writing tests. Although it is easy to sta...
Basics What is code coverage? In the simplest words, code coverage is a measure of exhaustiveness of a test suite. 100% code coverage means that a system is fully tested. Why bother about c...
What's a command bus? Command Bus is an incarnation of Mediator design pattern. It provides a way to decouple the code structure that sends a command to its receiver. It becomes handy with CQRS ...