Python 3.15 released: Lazy imports, UTF-8 and new data types

Python 3.15 is expected to speed up some programs and simplifies handling immutable data. UTF-8 as standard requires testing.
LWN.net

Explicit lazy imports for Python

Importing modules in Python is ubiquitous; most Python programs start with at least a few import statements. But the performance impact of those imports can be large—and may be entirely wasted effort ...

Identifying standard library APIs removed in Python 3.15 from your code using AST—502 ...

Python 3.15.0 was released on October 9, 2026. The "Removed" section of the official "What's New in Python 3.15" document ...
BetaNews

Python 3.15 arrives with lazy imports, UTF-8 by default and a faster JIT

Python 3.15 is out with explicit lazy imports, UTF-8 as the default encoding, frozendict and sentinel types, the Tachyon ...
XboxDev

Python 3.15: Lazy Imports, UTF-8 und neues Profiling

Python 3.15 bringt explizite Lazy Imports, UTF-8 als Standard und neues Sampling-Profiling. Bestehende Build- und ...

Python 3.15 erschienen: Faule Importe, UTF-8 und neue Datentypen

Python 3.15 soll manche Programme schneller starten lassen und vereinfacht den Umgang mit unveränderlichen Daten. UTF-8 als Standard erfordert Tests.