Mariusz Felisiak

Python :python: / Django :django: Developer 🧉
Django Releaser 📦
The PSF and DSF Member
Former Django (npub1l0c…kt92) Fellow

GitHub: https://github.com/felixxm
Website: https://www.mariuszfelisiak.org/

Last Notes

2026-03-14 06:32:15 GMT

I had a heart 🫀surgery 2.5 weeks ago. Today I ran 🏃 for the first time since then, nothing long or fast (6.37 miles, pace 8:36 per mile ⏱️), but I did it! 🦵🥳 I can run again 🔥 #running #recovering #Indestructible

2025-12-04 07:58:56 GMT

Django 6.0 is out 🎉 and includes some exciting new features like CSP, Tasks, or Template Partials 🤩 Many thanks to all 174 people who made this possible 💚 #django #openSource #python
https://gist.github.com/felixxm/99501cdbf6ed5a69295b4cb3f8c21d80

2025-11-25 08:36:26 GMT

Are you using #signals in #Django? Do you want to skip receivers when loading fixtures (especially for m2m relations)? Help me to fix this 9 years old ticket and review PR with the "raw" argument for m2m_changed signals #review #OpenSource
https://github.com/django/django/pull/20067

2025-10-09 11:03:11 GMT

Without attending to #DjangoOnTheMed 🏖 I would never found 3 days to work on database-level delete options. It's nearly done🎉💚 #Django #Python #sprints
https://github.com/django/django/pull/19925

2025-10-08 16:37:07 GMT

We've finished lovely but also a bit challenging run today with Simon Charette 🇨🇦 during #DjangoOnTheMed 9.71 miles, ±450 meters 🏃🏃⛰️💚 #running #TrailRunning
https://cdn.fosstodon.org/media_attachments/files/115/339/501/456/155/574/original/f528e58488ef43a1.jpg
https://cdn.fosstodon.org/media_attachments/files/115/339/502/050/223/221/original/6158d9af281c3f09.jpg
https://cdn.fosstodon.org/media_attachments/files/115/339/502/231/461/776/original/112d099832f1280a.jpg
https://cdn.fosstodon.org/media_attachments/files/115/339/502/551/138/231/original/742c25ec28e04f11.jpg

2025-09-30 11:34:59 GMT

Today is my last day at work. Tomorrow I am available to start with your team! 📢 If you're looking for a #Python / #Django veteran 🧭, who spent 5 years as a Django Fellow, maintaining Django itself, and who is a Django 💚 and Python 🐍 contributor. I'm here 👋 Contact me 📬 #opentowork
https://www.mariuszfelisiak.org/

2025-04-26 09:39:31 GMT

Heading home after amazing #djangoconeurope in Dublin 🇮🇪💚 Thanks to all the organizers and attendees for creating such a great event 🥳🎉 C y'all next year 👋 #Django #Conference

2025-04-25 08:32:23 GMT

@npub1mjx…httg talks about Django, data science & machine learning at the #djangoconeurope 💚🇮🇪
https://cdn.fosstodon.org/media_attachments/files/114/397/650/340/166/058/original/91ad0492f699d432.jpg

2025-01-24 10:29:36 GMT

Django tip: Before you waste unreasonable amount of time trying to fix a potential "race condition" 🏎️ 🧱 in your async code, check that you're not calling save() without update_fields which could undo all your hard work 🤦 💂 #django #python #grumbling #tip

2025-01-10 09:18:18 GMT

Only 3 days left to submit your proposal 📢 ⏱️ for @npub1zsj…wjsv 2025 in Dublin 🇮🇪 💚 Don’t hesitate and make the Program Team really busy in the coming days 😉 #djangoconeurope #django #python #cfp
https://pretalx.evolutio.pt/djangocon-europe-2025/cfp

2024-11-14 16:48:08 GMT

- reply

🤣

2024-11-14 16:33:53 GMT

I suggested to my daughter (5yo) that maybe we could put on some music 🎶 maybe Disney music, I asked.
"No, Daddy" she replied, "I like your music." She picked up "Disturbed" 🎸🔥 I couldn't be more proud of her 🥹 #parenthood #HeavyMetal

2024-11-05 10:24:43 GMT

Today I had the pleasure of releasing a new version of Django 💚 5.1.3 is out 🎉 with Python 3.13 support 🐍 and a few bugfixes 🐛 #Django #Python
https://www.djangoproject.com/weblog/2024/nov/05/bugfix-release/

2024-08-29 12:29:34 GMT

I just wrote a single QuerySet annotation containing Coalesce(), Cast(), Sum(), Count(), Round() and NullIf() 🙃 I went back to my roots 🧙 😅 #django #orm