<![CDATA[Stories by Bernd Fischer on Medium]]> https://medium.com/@captain-solaris?source=rss-f75ea994ca55------2 https://cdn-images-1.medium.com/fit/c/150/150/0*mDM9gRC5cX34wYbZ.jpg Stories by Bernd Fischer on Medium https://medium.com/@captain-solaris?source=rss-f75ea994ca55------2 Medium Wed, 04 Nov 2026 22:49:55 GMT <![CDATA[DuckDB 2.0 Broke My Mental Model of DuckDB]]>

DuckDB became popular by running right inside your application. Version 2.0 reaches beyond that model — and brings Python changes you…

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]]> https://captain-solaris.medium.com/wait-duckdb-has-a-server-now-a96f63c763d2?source=rss-f75ea994ca55------2 https://medium.com/p/a96f63c763d2 Tue, 27 Oct 2026 07:16:01 GMT 2026-10-27T13:25:09.076Z <![CDATA[Python Just Shipped Five Security Releases. Here’s Why.]]>

Compromised eMudhra CA keys pushed Python to add protection directly to ssl, just days after the first pip and certifi response.

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]]> https://captain-solaris.medium.com/python-just-shipped-five-security-releases-heres-why-3ba86460c294?source=rss-f75ea994ca55------2 https://medium.com/p/3ba86460c294 Mon, 26 Oct 2026 14:46:52 GMT 2026-10-26T14:46:52.916Z <![CDATA[I Tested Pandas 3.1’s New CSV Engine. I Wasn’t Expecting This.]]>

I tested Pandas 3.1’s new CSV engine on 20 million rows — and the results changed how I’d choose between speed and memory.

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]]> https://python.plainenglish.io/pandas-3-1-just-dropped-read-csv-is-up-to-14-faster-5f2e262548b9?source=rss-f75ea994ca55------2 https://medium.com/p/5f2e262548b9 Fri, 23 Oct 2026 06:31:01 GMT 2026-10-27T13:29:50.780Z <![CDATA[I Peeked Into Python 3.16. It’s Full of Small Surprises.]]>

I installed the first alpha expecting very little. Then I started finding improvements I actually want to use.

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]]> https://python.plainenglish.io/i-peeked-into-python-3-16-its-full-of-small-surprises-c4cca452a7aa?source=rss-f75ea994ca55------2 https://medium.com/p/c4cca452a7aa Sat, 17 Oct 2026 08:26:01 GMT 2026-10-17T08:26:01.867Z <![CDATA[6 Python Data Tools I Wish I Had Found Before Using Pandas for Everything]]>

Cleaner joins, safer imports, better validation, and less awkward data wrangling — without giving up Pandas.

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]]> https://python.plainenglish.io/6-python-data-tools-i-wish-i-had-found-before-using-pandas-for-everything-171c1e7ad8d2?source=rss-f75ea994ca55------2 https://medium.com/p/171c1e7ad8d2 Wed, 14 Oct 2026 06:36:01 GMT 2026-10-14T06:36:01.504Z <![CDATA[Python 3.15 Has a New Kind of Dict. And It’s Not What I Expected.]]>

Your dictionaries can now be hashable, cacheable, and impossible to accidentally modify. Here are 7 surprisingly useful things that…

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]]> https://python.plainenglish.io/python-3-15s-new-frozendict-has-7-tricks-your-regular-dict-cant-do-2e5d573e6877?source=rss-f75ea994ca55------2 https://medium.com/p/2e5d573e6877 Mon, 12 Oct 2026 06:11:01 GMT 2026-10-30T00:14:03.531Z <![CDATA[7 Python Design Patterns That Are Actually Worth Using]]>

No architecture astronautics. Just seven patterns that make everyday Python code noticeably nicer.

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]]> https://levelup.gitconnected.com/7-python-design-patterns-that-are-actually-worth-using-fa1da1ae8646?source=rss-f75ea994ca55------2 https://medium.com/p/fa1da1ae8646 Fri, 09 Oct 2026 06:56:01 GMT 2026-10-14T14:21:10.781Z <![CDATA[Polars 2.0 Just Dropped. I Threw 100 Million Rows at It.]]>

It finished in 0.41 seconds — using less than 600 MB of RAM.

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]]> https://python.plainenglish.io/polars-2-0-just-dropped-i-threw-100-million-rows-at-it-70e1f05e5608?source=rss-f75ea994ca55------2 https://medium.com/p/70e1f05e5608 Wed, 07 Oct 2026 14:22:49 GMT 2026-10-17T15:45:34.435Z <![CDATA[5 Pandas Tricks That Let You Work With CSVs Bigger Than Your RAM]]>

5 read_csv() techniques that let you process huge CSVs without loading all that data into RAM.

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]]> https://python.plainenglish.io/5-pandas-tricks-that-let-you-work-with-csvs-bigger-than-your-ram-23229f601655?source=rss-f75ea994ca55------2 https://medium.com/p/23229f601655 Fri, 25 Sep 2026 06:41:01 GMT 2026-10-12T18:09:57.809Z <![CDATA[5 Software Architecture Patterns Every Senior ML Engineer Should Know]]>

Machine learning systems rarely fail because someone forgot how gradient descent works.

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]]> https://python.plainenglish.io/5-software-architecture-patterns-every-senior-ml-engineer-should-know-8f47ba65eb31?source=rss-f75ea994ca55------2 https://medium.com/p/8f47ba65eb31 Thu, 24 Sep 2026 07:26:01 GMT 2026-10-17T06:04:58.031Z