Python 3.15 Goes Global with UTF-8 Support
The release standardizes text handling, speeds startup with opt-in lazy imports and adds an upgraded experimental JIT, according to Python.org.
- On October 9, 2026, the Python development team released Python 3.15, introducing default UTF-8 text encoding, an experimental just-in-time compiler, and an opt-in lazy import system.
- Python previously relied on host system locales for text handling, causing data corruption for Windows developers processing non-ASCII characters; PEP 686 mandates UTF-8 as the standard encoding regardless of configuration.
- Under PEP 810, lazy imports bind modules to lightweight proxies, loading them only upon first access to reduce launch times for dependency-heavy applications; the experimental JIT compiler delivers platform-dependent performance gains.
- Longtime programmer Barry Warsaw created 'whatsnewt,' a terminal-based adventure game with 18 puzzles; each centers on "a real 3.15 feature you have to actually use," Warsaw wrote.
- Aligning with modern standards used by Rust, Go, and Node.js, version 3.15 arrives 12 months after Python 3.14, marking another step in the language's evolution toward broader compatibility.
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Python 3.15, one of the major language updates of recent years, is available with a faster JIT compiler, explicit lazy imports and the default UTF-8The Python Software Foundation has officially released Python 3.15, marking one of the most important updates of this programming language in recent years. This new version brings a series of performance-oriented improvements, as well as language features...
Python 3.15 is supposed to let some programs start faster and simplifies the handling of immutable data. UTF-8 as standard requires tests.
Python 3.15 Released with UTF-8 as Default & Lazy Import
Python, the popular general purpose programming language, released new major 3.15 version yesterday. The new version is the result of 17 months of development, that features many new typing features, interpreter, standard, and C API library improvements. Python 3.15 introduced new typing features. They include a new special form TypeForm for annotating values that are themselves type expressions, @typing.disjoint_base decorator that can be used …
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