Python A simple filtering syntax tree in Python Working on various pieces of software those last years, I noticed that there's always a feature that requires implementing some DSL. The problem with DSL is that it is never the road that
Python Correct HTTP scheme in WSGI with Cloudflare I've recently been using Cloudflare as an HTTP frontend for some applications, and getting things working correctly with WSGI was unobvious. In Python, WSGI is the standard protocol to write a Web application.
Python Is Python a Good Choice for Entreprise Projects? A few weeks ago, one of my followers, Morteza, reached out and asked me the following: I develop projects mostly with Python, but I am scared that Python is not a good choice
Ghost On blog migration I've started my first Web page in 1998 and one could say that it evolved quite a bit in the meantime. From a Frontpage designed Web site with frames, it evolved to plain
Python Scaling a polling Python application with tooz This article is the final one of the series I wrote about scaling a large number of connections in a Python application. If you don't remember what the problem we're trying to solve
Python Scaling a polling Python application with asyncio This article is a follow-up of my previous blog post about scaling a large number of connections. If you don't remember, I was trying to solve one of my followers' problem: It so
Python Scaling a polling Python application with parallelism A few weeks ago, Alon contacted me and asked me the following: It so happened that I'm currently working on scaling some Python app. Specifically, now I'm trying to figure out the best
Books Scaling Python released I am proud to announce today the immediate release of Scaling Python, my second book about Python! It talks about the distribution and performance of applications written in Python, and how to build
Books Scaling Python: the interviewees The release date for Scaling Python is now very close! Today, I'd like to talk a bit about the interviews that I've run those last months that are featured in the book. I'm
Interview My interview with Cool Python Codes A few days ago, I've recently been contacted by Godson Rapture from Cool Python codes to answer a few questions about what I work on in open source. Godson regularly interview developers and
Talks Attending PyCon FR 2017 The French edition of the annual Python conference, PyCon FR, will happen in Toulouse from 21st to 24th September. I skipped the last few PyCon FR, but this year I will be back
Python Easy Python logging with daiquiri After more than 10 years of writing Python, there's something I always have been annoyed with: logging. Don't read me wrong: I like the Python logging subsystem. It's easy to use and works
Python Python never gives up: the tenacity library A couple of years ago, I wrote about the Python retrying library. This library was designed to retry the execution of a task when a failure occurred. I started to spread usage of
Talks FOSDEM 2017, recap Last week-end, I was in Brussels, Belgium for the 2017 edition of the FOSDEM, one of the greatest open source developer conference. This year, I decided to propose a talk about Gnocchi which
Books Scaling Python is on its way My day-to-day activities are still evolving around the Python programming language, as I continue working on the OpenStack project as part of my job at Red Hat. OpenStack is still the biggest Python
Python Packaging Python software with pbr Packaging Python has been a painful experience for long. The history of the various distribution that Python offered along the years is really bumpy, and both the user and developer experience has been
Python From decimal to timestamp with MySQL When working with timestamps, one question that often arises is the precision of those timestamps. Most software is good enough with a precision up to the second, and that's easy. But in some
Python The definitive guide to Python exceptions Three years after my definitive guide on Python classic, static, class and abstract methods, it seems to be time for a new one. Here, I would like to dissect and discuss Python exceptions.
Books The Hacker's Guide to Python 3rd edition is out Exactly a year ago, I released the second edition of my book The Hacker's Guide to Python. One more time, it has been a wonderful release and I received a lot of amazing
Pifpaf Pifpaf, or how to run any daemon briefly There's a lot of situation where you end up needing a software deployed temporarily. This can happen when testing something manually, when running a script or when launching a test suite. Indeed, many
Gnocchi Timeseries storage and data compression The first major version of the scalable timeserie database I work on, Gnocchi was a released a few months ago. In this first iteration, it took a rather naive approach to data storage.
Python Profiling Python using cProfile: a concrete case Writing programs is fun, but making them fast can be a pain. Python programs are no exception to that, but the basic profiling toolchain is actually not that complicated to use. Here, I
Interview My interview in le Journal du Hacker A few days ago, the French equivalent of Hacker News, called "Le Journal du Hacker", interviewed me about my work on OpenStack, my job at Red Hat and my self-published book
Python Data validation in Python with voluptuous Continuing my post series on the tools I use these days in Python, this time I would like to talk about a library I really like, named voluptuous. It's no secret that most
LWN.net Reading LWN.net with Pocket I've started to use Pocket a few months ago to store my backlog of things to read. It's especially useful as I can use it to read content offline since we still don't