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Just released! 🚀

🐍 Python 3.15 alpha 3!

https://discuss.python.org/t/python-3-15-0-alpha-3/105325?u=hugovk

🔬 PEP 799: A new high-frequency statistical sampling profiler and dedicated profiling package
💬 PEP 686: Python now uses UTF-8 as the default encoding
🌊 PEP 782: A new PyBytesWriter C API to create a Python bytes object
🎨 Colour code snippets in argparse help: https://bsky.app/profile/savannah.dev/post/3m7svdqdeqs2x
⚠️ Better error messages

#Python #Python315 #CPython #release #PEP799 #PEP686 #PEP782 #argparse

Python 3.15.0 alpha 3

This is an early developer preview of Python 3.15 Major new features of the 3.15 series, compared to 3.14 Python 3.15 is still in development. This release, 3.15.0a3, is the third of seven planned alpha releases. Alpha releases are intended to make it easier to test the current state of new features and bug fixes and to test the release process. During the alpha phase, features may be added up until the start of the beta phase (2026-05-05) and, if necessary, may be modified or deleted up un...

Discussions on Python.org

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Hugo van Kemenade Oct 14, 2025

Forget* about Python 3.14, all the cool kids are trying out Python 3.15.0 alpha 1 (but not on production)! 🚀

🔬 PEP 799: A dedicated profiling package for Python profiling tools
💬 PEP 686: Python now uses UTF-8 as the default encoding
🌊 PEP 782: A new PyBytesWriter C API to create a Python bytes object
⚠️ Better error messages

https://discuss.python.org/t/python-3-15-alpha-1/104358?u=hugovk

* Please don't forget about 3.14...

#Python #Python315 #release #PEP799 #PEP686 #PEP782

Python 3.15 alpha 1

This is an early developer preview of Python 3.15 Major new features of the 3.15 series, compared to 3.14 Python 3.15 is still in development. This release, 3.15.0a1, is the first of seven planned alpha releases. Alpha releases are intended to make it easier to test the current state of new features and bug fixes and to test the release process. During the alpha phase, features may be added up until the start of the beta phase (2026-05-05) and, if necessary, may be modified or deleted up un...

Discussions on Python.org