Is your test suite wasting your time?
This article has been originally included in a PyconPL 2018 conference book. Abstract Nowadays there is no need for convincing anyone about the enormous advantages of writing automated tests for th...
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I am writing a book!
You might be wondering why lately there is not much activity on the blog. Frankly, I am currently fully involved in another writing project, namely I am writing a book on the Clean Architecture! Bo...
Implementing Event Sourcing in Python – part 4, efficient read model with projections
This post is a part of Implementing Event Sourcing series. It consists of code snippets, thoughts and practical advice how to implement ES in your own project. The contents of this post will probab...
Implementing Event Sourcing in Python – part 3, robust event store atop RethinkDB
This post is a part of Implementing Event Sourcing series. It consists of code snippets, thoughts and practical advice how to implement ES in your own project. The contents of this post will probab...
Implementing Event Sourcing in Python - part 2, robust event store atop PostgreSQL
This post is a part of Implementing Event Sourcing series. It consists of code snippets, thoughts and practical advice how to implement ES in your own project. The contents of this post will probab...
Implementing Event Sourcing in Python - part 1, aggregates
This post is a part of Implementing Event Sourcing series. It consists of code snippets, thoughts and practical advice how to implement ES in your own project. The contents of this post will probab...
I have a big class with too many methods. How do I split it?
So there you are, with a class that has over 100 (200? 500? 1000?) lines of code in Python. Wow, such an impressive achievement. Life with a monster like this can’t be easy. History of our giant cl...
asyncio - choosing the right executor
During application development with asyncio you will inevitably encounter situation when there is no asyncio-compatible library to use. It may be an API client for our business partner built with e...
Writing custom checkers for Pylint
In the world of Python we have quite decent tools for a static code analysis. There are pylint, flake8, pep8 just to name a few. Rules they enforce are based on a solid foundation - PEP8 - Style Gu...
Django - squashing migrations versus continuous delivery
Every Django project may encounter a steady increase in a number of migrations over time. One way to lower their quantity is to use squashing. Squashing amounts to taking contents of few migrations...