Software1 hOctober 14, 2026, 19:00

Python 3.15 released with default UTF-8 support on all platforms

Python 3.15 has been released after a week's delay caused by last-minute regressions. The headline change is default UTF-8 encoding across all platforms, including Windows, ending decades of non-ASCII character corruption. It also adds a profiler, an experimental JIT compiler, and lazy imports.

The Register

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Python 3.15 released with default UTF-8 support on all platforms

UTF-8 is now the default encoding on all platforms, including Windows
Adds an experimental JIT compiler and a new profiler
Introduces Lazy Import to defer module loading
Release was delayed a week by regressions in Lazy Import

#Python#Windows

Python 3.15: test shows lazy import defers the delay, not removes it

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Python 3.15: JIT Gives 7–8%, but Lazy Imports and Profiler Matter More

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Open source roundup: Python 3.15, OpenSSH 10.6 and LineageOS 24.0

Software

Python 3.15 released with default UTF-8 support on all platforms

Python 3.15: test shows lazy import defers the delay, not removes it

Python 3.15: JIT Gives 7–8%, but Lazy Imports and Profiler Matter More

Open source roundup: Python 3.15, OpenSSH 10.6 and LineageOS 24.0

Python 3.15 lazy imports cut cold start from 512 ms to 32 ms