15 days of Python 3.15 🐍🚀

Learn the new 3.15 features that matter through examples

I'm going through the most important new features in Python 3.15, focusing on practical examples with clear explanations.

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Schedule for the 15 days of Python 3.15

Topic Link
Top 5 most exciting 3.15 features Read now
Lazy imports Read now
New built-in type sentinel Read now
New built-in type frozendict Read now
Unpacking inside comprehensions Read now
Startup config files Read now
Python 3.15 DX improvements Read now
Tachyon: new sampling profiler Read now
>> New package profiling Read now
TypedDict with extra items Coming Oct 26
Typing improvements in 3.15 Coming Oct 27
Standard library niceties Coming Oct 28
Generators and threading Coming Oct 29
The new abi3t Coming Oct 30
3.15 roundup Coming Nov 2

For Python developers who don't want to sift through the changelog or read every PEP

Hi, I'm Rodrigo

I'm from sunny Portugal 🇵🇹 and I've taught Python to thousands of developers over the past decade.

Some of my most notorious contributions to the Python community include self-publishing my free Pydon'ts book with over 40,000 readers, having given dozens of talks and tutorials at Python conferences worldwide, and writing over 500,000 words on my technical blog. For my high-quality technical and educational work, I was awarded the PSF Community Service Award in 2025.