https://arielsmarin.com/tags/python/Recent content in Python on Ariel Marin — Architectural VisualizationHugoen-USarielsmarin@gmail.com (Ariel Marin)arielsmarin@gmail.com (Ariel Marin)Sat, 20 Jun 2026 00:00:00 -0300https://arielsmarin.com/blog/automating-a-render-queue-with-python-and-systemd/Sat, 20 Jun 2026 00:00:00 -0300arielsmarin@gmail.com (Ariel Marin)https://arielsmarin.com/blog/automating-a-render-queue-with-python-and-systemd/<p>My render node used to be driven by a folder of <code>.bat</code> files and hope. This post walks through the small Python daemon that replaced them — about 300 lines, no framework, running under systemd on Debian.</p> <h2 id="requirements">Requirements</h2> <ul> <li>queue render jobs from any machine on the LAN;</li> <li>survive renderer crashes without losing the queue;</li> <li>notify me when a job finishes or fails.</li> </ul> <h2 id="the-queue">The queue</h2> <p>Jobs are plain JSON files dropped into a watched directory — no database, no broker. The filesystem <em>is</em> the queue, and <code>mv</code> is atomic:</p>