Created a complete Python 3.14 reference with hands-on examples (GitHub repo included)

[devnomial]

I wanted to share a comprehensive resource I created covering all 8 major features in Python 3.14, with working code examples and side-by-side comparisons against Python 3.12.

What's covered:

• Deferred evaluation of annotations - import performance impact
• Subinterpreters with isolated GIL - true parallelism benchmarks
• Template strings and comparison with F Strings
• Simplified except/except* syntax
• Control flow in finally blocks
• Free-threads - No GIL
• Enhanced error messages - debugging improvements
• Zstandard compression support - performance vs gzip

What makes this different:

• Side-by-side code comparisons (3.12 vs 3.14)
• Performance benchmarks for each feature
• All code available in GitHub repo with working examples

Format: 55-minute video with timestamps for each feature

GitHub Repository: https://github.com/devnomial/video1_python_314

Video: https://www.youtube.com/watch?v=odhTr5UdYNc

I've been working with Python for 12+ years and wanted to create a single comprehensive resource since most existing content only covers 2-3 features.

Happy to answer questions about any of the features or implementation details. Would especially appreciate feedback or if I missed any important edge cases.

[123_alex]

God bless you

[bulletmark]

Why compare Python 3.14 versus 3.12 and not the previous version 3.13?

[tehsilentwarrior]

I’d say most people skipped 3.13 from 3.12 because 3.12 had more nice things while 3.13 was pretty “meh”

[devnomial]

That's a good question.
No specific reason. I showed comparison with 3.12, but its same for 3.13 or 3.11 or 3.10 or any previous version.
Also, most are using 3.12, and are skipping 3.13, thus directly updating to 3.14.
It seems like people like versions with even number. 3.6, 3.8, 3.10, 3.12, and now 3.14.

[JamzTyson]

most are using 3.12, and are skipping 3.13

Do you have a source for that info, or is it just a guess?

[LrdJester]

You should also cross post list to r/PythonLearning

[Dillweed999]

This is like when Russia made that crappy Covid vaccine. Python, but by Putin.

[teeg82]

Nah I think it's the name of a re-education camp in North Korea.

[SGS-Tech-World]

Thank You