Python 3.15 is expected to speed up some programs and simplifies handling immutable data. UTF-8 as standard requires testing.
In benchmarks comparing Python 3.15 and Python 3.14, Python 3.15 was found to be approximately 1.45 times faster overall.
Today all the cool languages and runtimes pledge allegiance to UTF-8, including Rust, Go, and Node.js (JavaScript itself prefers UTF-16 for internal encoding). Most code editors, from Visual Studio ...
This article is a summary of the official announcement. Confirmation date: 2026-10-15 (confirmation date of 00_seed.md).
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