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Memory leaks in Python are often straightforward to diagnose. Just look at RSS, track Python object counts, follow reference graphs. But leaks inside C extension modules are another story. Traditional memory metrics such as RSS and VMS frequently ...

Learn Liskov substitution in Python. Spot Square and Rectangle pitfalls and design safer APIs with polymorphism. Test your understanding now.

Yesterday, the kids came home for the Christmas holidays. Marco surprised me by telling me that on his flight from Brussels, he discovered and listened to "my podcast" on Spotify. I was stunned. I didn't remember ever recording a podcast, even though ...

News and announcements from the Python community for the week of Dec 22nd, 2025 ...

Modern REST API Tutorial in Python 2025-12-22, by Dariusz Suchojad Great APIs don't win theoretical arguments - they just prefer to work reliably and to make developers' lives easier. Here's a tutorial on what building production APIs is really about ...

This year I authored PEP 770 which proposed a new standardized location for Software Bill-of-Materials (SBOM) data within Python wheel archives. SBOM data can now be stored in (package)-(version).d ...

I used Hypothesis to generate random data structure schemas, and then generate random data using them. I learned a lot along the way.

How can it be a real website if it's less than 7k?

What are the advantages of spec-driven development compared to vibe coding with an LLM? Are these recent trends a move toward declarative programming? This week on the show, Marc Brooker, VP and Distinguished Engineer at AWS, joins us to discuss ...

I know, from personal experience, that it takes a significant amount of effort to research, write, revise, and submit a decently plausible funding proposal to the US government's National Science Foundation. A successful NSF proposal | Cogito, Ergo . ...