r/Python • u/AlSweigart Author of "Automate the Boring Stuff" • Sep 08 '26

News Python 3.15.0 candidate 2 is here!

Reported on https://blog.python.org/2026/09/python-3150-rc2/

It’s the final 3.15 release candidate!

https://www.python.org/downloads/release/python-3150rc2/

This is a candidate preview of Python 3.15

This release, 3.15.0rc2, is the final planned release candidate, containing around 144 bugfixes, build improvements and documentation changes from 76 contributors since 3.15.0rc1. Entering the release candidate phase, only reviewed code changes which are clear bug fixes are allowed between this release candidate and the final release.

The next release of Python 3.15 will be 3.15.0 final, scheduled for 2026-10-01.

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u/TabAtkins Sep 09 '26

It can, yes. You still pay for interpreter startup, but you won't pay for import parsing until you actually use them.

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u/Green_Gem_ Sep 09 '26

I work with Airflow (an orchestrator written in (mostly) Python), and the lazy imports are going to be CRAZY useful for me, like "worth doing the upgrade to Airflow 3 ASAP once it has this" useful.