Hello Python 3.15, goodbye 3.10, and now I can use 3.11
Here's the essential What's new in Python 3.15 guide, this year curated by 3.14 and 3.15 release manager Hugo van Kemenade.

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Key points
- As someone who builds open source software that works in every supported Python version, I get to say goodbye to Python 3.10 and start embracing features from Python 3.11.
- First, some highlights from Python 3.15.
- I'm most excited about Explicit lazy imports from PEP 810.
- I had to recommend manual lazy imports in the plugin author documentation, because simply installing plugins that used heavy dependencies such as sentencetransformers could add multiple seconds to every invocation of the llm command.
Sources (1)
- [1]Hello Python 3.15, goodbye 3.10, and now I can use 3.11Simon Willison's Weblog · Oct 12, 06:15 PM
Here's the essential What's new in Python 3.15 guide, this year curated by 3.14 and 3.15 release manager Hugo van Kemenade.
As someone who builds open source software that works in every supported Python version, I get to say goodbye to Python 3.10 and start embracing features from Python 3.11.
Extractive summary: sentences quoted from the sources.
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