Python Bytes

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Topics covered in this episode:
  • Free-threaded Python: past, present, and future
  • django-admin-site-search
  • Qwen 3.6 27B is the sweet spot for local development
  • A large batch of PEPs are finalized
  • Extras
  • Joke
  • Watch on YouTube

    Show Intro

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        Calvin #1: Free-threaded Python: past, present, and future

        • The GIL has prevented true multi-threaded parallelism in CPython since the beginning — multiple past attempts to remove it failed on performance grounds
        • Sam Gross at Meta finally solved it; his work became PEP 703 and ships as free-threaded CPython today
        • Python 3.13 was experimental with 20–40% single-threaded slowdown; 3.14 brought that to 0–10%
        • Python 3.15 (October 2026) delivers a unified ABI — one extension binary works on both GIL and free-threaded builds
        • Already >50% of the top PyPI binary wheels support free threading
        • Wouters predicts free-threaded becomes the default between 3.16–3.20 (2027–2031), with the GIL eventually disappearing next decade
        • Michael #2: django-admin-site-search

          • via Adam Parkin
          • A global/site search modal for the Django admin, by Ahmed Aljawahiry. Hit cmd+k anywhere in the admin and you get a command-palette-style search window, kind of like the one in VS Code.
          • It doesn't just search one model's list page. It searches your entire site in one box:
            • App labels
            • Model labels and field attributes
            • Actual model instances (your data)
            • Two ways to search the instances:
              • model_char_fields (the default): runs an __icontains across every CharField (and subclasses) on the model. Zero config, works out of the box.
              • admin_search_fields: defers to each ModelAdmin's existing get_search_results(), so it respects the search_fields you've already set up.
              • The part I like: it's permission-aware out of the box. Users only see results for the apps and models they actually have view permission on, so you're not leaking anything through search.
              • Results appear as you type, with throttling/debouncing so you're not hammering the server on every keystroke, and it's full keyboard nav: cmd+k to open, up/down to move, enter to go.
              • It's responsive, does dark and light mode, and it pulls Django's built-in admin CSS variables so it just matches whatever admin theme you're running.
              • Under the hood it's Alpine.js, but bundled into static so there's no external CDN dependency.
              • Setup is about what you'd expect: pip install django-admin-site-search, add it to INSTALLED_APPS, mix the AdminSiteSearchView into your AdminSite, and drop a few template includes into base_site.html.
              • Supports Python 3.8 through 3.14 and Django 3.2 through 6.0, MIT licensed, and everything is overridable if you want to skip certain models, add TextField matching, etc.
              • Calvin #3: Qwen 3.6 27B is the sweet spot for local development

                • Qwen 3.6 27B is being called the first local model that genuinely competes as a general-purpose intelligence — benchmarks put it at roughly mid-2025 frontier level (comparable to GPT-5 / Claude Sonnet 4.5)
                • Runs locally via llama.cpp; on an M5 MacBook Max with 8-bit quantization + multi-token prediction, it hits ~32 tokens/sec using ~42GB RAM
                • 4-bit quantization gets it under 18GB, runnable on 32GB devices; Nvidia RTX cards run it even faster
                • The dense 27B is recommended over the faster MoE 35B A3B — author prefers higher quality output over raw speed
                • Privacy and reliability are the pitch: fine-tunable, can't be taken down, suitable for sensitive/proprietary data
                • Author sees this as a stepping stone — frontier open-weight models like GLM 5.2 are now locally runnable with company-grade hardware, and smarter-still local models are coming
                • Michael #4: A large batch of PEPs are finalized

                  • A bunch of PEPs went from accepted to final.
                    • 668, 687, 691, 699, 701, 703, 728, 770, 773, 829
                    • But this wasn’t them making their way into CPython. It’s an admin sorta thing. (Thanks PyCoders)
                    • See the commit.
                    • Extras

                      Calvin:

                      • More fun bling for your terminal this time - https://charm.land/
                      • Michael:

                        • Follow up from pls, What the pls? Thanks Pito.
                        • Joke: BEMoji

                          • A production-grade utility and component framework built entirely on emoji class names
                          • via Jeff Triplett
                          • ...more
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                            Python BytesBy Michael Kennedy and Calvin Hendryx-Parker

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