In this asynchronous episode we're interviewing a fellow core developer Yury Selivanov to talk about asyncio's past and future, composable design, immutability, and databases you'd actually like using. We also broke the 2-hour episode barrier!

## Timestamps

(00:00:00 ) INTRO

(00:01:33 ) PART 1: INTERVIEW

(00:02:27 ) What drives you?

(00:04:47 ) How do you choose what to work on?

(00:08:10 ) Hyperfocus

(00:09:28 ) Things from Rust that Python could use

(00:14:50 ) Nothing is sacred when you depend on glibc

(00:18:47 ) TypeScript typing is god-tier

(00:22:04 ) Adding async and await to Python

(00:34:11 ) Adding new keywords to the language

(00:41:17 ) Jumping into a new codebase

(00:49:22 ) Any design regrets?

(00:58:46 ) Contextvars

(01:10:40 ) Is the frozenmap PEP happening?

(01:19:21 ) uvloop

(01:23:25 ) What makes Gel lovable?

(01:39:57 ) PART 2: PR OF THE WEEK

(01:47:08 ) Saturday talks at PyCon should be fun

(01:50:35 ) PART 3: WHAT'S GOING ON IN CPYTHON

(01:50:47 ) Ken Jin's tail-call interpreter

(01:55:05 ) Barney Gale's glob.glob() optimization

(01:55:43 ) Brandt's boolean guards to narrow types to values in the JIT

(01:56:33 ) Mark Shannon's stack limits implemented with addresses, not counters

(01:58:34 ) Brandt's removal of _DYNAMIC_EXIT

(01:58:53 ) Mark Shannon's async for branches instrumented

(01:59:36 ) Free-threading changes

(01:59:58 ) Sam Gross' regression tests can now run in --parallel-threads

(02:00:34 ) Tomasz Pytel's thread safety crusade

(02:01:01 ) Xuanteng Huang's __annotations__ race fix

(02:01:11 ) Kumar's per-thread linked lists for tasks

(02:02:54 ) Serhiy's crashes related to PySys_GetObject() fixed

(02:03:22 ) Sam's usage of stack pointers in thread stack traversal

(02:03:38 ) Dino Viehland's lock avoidance during object cleanup

(02:04:23 ) OUTRO