Understanding Python metaclasses 09 February 2015 (updated 19 November 2020) None of the existing articles [1] give a comprehensive explanation of how metaclasses work in Python so I'm making my own. Metaclasses are a controversial topic [2] in Python, many users avoid them and I think this is largely caused by the arbitrary workflow and lookup rules which are not well explained. There are few key

So I keep finding this class Meta idiom in python APIs lately. Found it in factory-boy and WTForms and I suspected they both got it from Django, but I googled and couldn’t find any explanations of the reason for it or where it came from or why they all call it class Meta. So here it is! TL;DR What it is The inner Meta class has absolutely no relation to python’s metaclasses. The name is just a coi

last modified October 18, 2023 This is PyQt5 tutorial. The tutorial is suited for beginners and intermediate programmers. After reading this tutorial, you will be able to program non-trivial PyQt5 applications. The code examples are availabe at the author's PyQt5-Tutorial-Examples repository. Python PyQt6 covers the latest version of PyQt. Table of contentsE-bookA unique e-book covering advanced f

This blog deals almost exclusively with my Python coding activities. tl;dr: the proposed type hinting for Python is done to help tools analyze code better (which can be very useful for programmers) but at the cost of reduced readability.  A different idea is discussed which focuses on readability. ---- So, Python is going to have some type hinting [PEP484]. I agree with the idea that lead to this

Please consider subscribing to LWNSubscriptions are the lifeblood of LWN.net. If you appreciate this content and would like to see more of it, your subscription will help to ensure that LWN continues to thrive. Please visit this page to join up and keep LWN on the net. Python is a poster child for dynamically typed languages, but if Guido van Rossum gets his way—as benevolent dictator for life (BD