Watch the live stream: Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Test & Code Podcast Patreon Supporters Special guest: Gina Häußge, creator & maintainer of OctoPrint Michael #1: beanita Local MongoDB-like database prepared to work with Beanie ODM So, you know Beanie - Pydantic + async + MongoDB And you know Mongita - Mongita is to MongoDB as SQLite is to SQL Beanita lets you use Beanie, but against Mongita rather than a server-based MongoDB server Brian #2: The Good Research Code Handbook Patrick J Mineault “for grad students, postdocs and PIs (principle investigator) who do a lot of programming as part of their research.” lessons setup git, virtual environments, project layout, packaging, cookie cutter style style guides, keeping things clean coding separating concerns, separating pure functions and those with side effects, pythonic-ness testing unit testing, testing with side effects, … (incorrect definition of end-to-end tests, but a good job at covering the other bits) documentation comments, tests, docstrings, README.md, usage docs, tutorials, websites documenting pipelines and projects social aspects various reviews, pairing, open source, community sample project extras testing example good tools to use Gina #3: CadQuery Python lib to do build parametric 3D CAD models Can output STL, STEP, AMF, SVG and some more Uses same geometry kernel as FreeCAD (OpenCascade) Also available: desktop editor, Jupyter extension, CLI Would recommend the Jupyter extension, the app seems a bit behind latest development Jupyter extension is easy to set up on Docker and comes with a nice 3D preview pane Was able to create a basic parametric design of an insert for an assortment box easily Python 3.8+, not yet 3.11, OpenCascade related Michael #4: Textinator Like TextSniper, but in Python Simple MacOS StatusBar / Menu Bar app to automatically detect text in screenshots Built with RUMPS: Ridiculously Uncomplicated macOS Python Statusbar apps Take a screenshot of a region of the screen using ⌘ + ⇧ + 4 (Cmd + Shift + 4). The app will automatically detect any text in the screenshot and copy it to your clipboard. How Textinator Works At startup, Textinator starts a persistent NSMetadataQuery Spotlight query (using the pyobjc Python-to-Objective-C bridge) to detect when a new screenshot is created. When the user creates screenshot, the NSMetadataQuery query is fired and Textinator performs text detection using a Vision VNRecognizeTextRequest call. Brian #5: Handling Concurrency Without Locks "How to not let concurrency cripple your system” Haki Benita “…common concurrency challenges and how to overcome them with minimal locking.” Starts with a Django web app A url shortener that generates a unique short url and stores the result in a database so it doesn’t get re-used. Discussions of collision with two users checking, then storing keys at the same time. locking problems in general utilizing database ability to make sure some items are unique, in this case PostgreSQL updating your code to take advantage of database constraints support to allow you to do less locking within your code Gina #6: TatSu Generates parsers from EBNF grammars (or ANTLR) Can compile the model (similar to regex) for quick reuse or generate python source Many examples provided Active development, Python 3.10+ Extras Michael: Back on 285 we spoke about PEP 690. Now there is a proper blog post about it. Expedited release of Python3.11.0b3 - Due to a known incompatibility with pytest and the previous beta release (Python 3.11.0b2) and after some deliberation, Python release team have decided to do an expedited release of Python 3.11.0b3 so the community can continue testing their packages with pytest and therefore testing the betas as expected. (via Python Weekly) Kagi search via Daniel Hjertholm Not ...