CPython 3.15: Updates Rivals Will Use — Profiler, JIT, noGIL, Lazy Imports, UTF-8
- Time
- 2026-08-08 11:20 ~ 11:50
- Speaker
- Petr Andreev
- Room
- TR412-1
- Co-write
- https://hackmd.io/BkNIeElUfe
Abstract
CPython 3.15 brings updates that change how we debug, start, and scale Python systems — not just syntax sugar.
In this talk, I’ll go deep on 2 high-impact topics:
- Tachyon profiling: find bottlenecks with low overhead
- FreeThreading updates vs. Go/Java/.NET, where CPython wins, where it doesn’t
Then I’ll do a fast sweep of:
- explicit lazy imports: faster startup for your app
- frozendict, and its design
- unpacking in comprehensions: your eyes love it!
- UTF-8 by default: already feeling more confident?
Presentation is here
Speaker
Petr Andreev
Specializes in CPython internals, optimization, and high-performance computing.
Driven by GPU acceleration, CPU vectorization. Evolved from ML systems to CPython core research engineer.
8+ years leading teams in AI, maths, and physics. PyCon speaker.
Lecturer at Moscow Institute of Physics and Technology – top 1 Russian university.
Open to talks and collaboration.