You think you know Python? We thought so, too. Join us for an episode of surprises. You might know some of those, but you sure don't know all of them. ## Outline (00:00:00) INTRO (00:02:22) Integer interning with a twist (00:10:58) Return in finally (00:15:32) all([[]]) (00:20:06) Lists, iterators and hashing shenanigans (00:27:08) hash(-1) (00:31:30) String interning (00:34:23) PR OF THE WEEK (00:34:56) asyncio REPL now uses pyrepl, too (00:44:06) PyOS_InputHook (00:51:56) WHAT'S GOING ON IN CPYTHON (00:52:05) New core developers! (00:55:10) 3.13 beta 2 & 3.12.4 released (00:56:04) Pablo's top 3 favorite pyrepl improvements in Beta 2 (00:59:50) PEP 667 implemented! (01:02:42) Tian Gao's improvements to pdb (01:06:31) Uncle Tim's crusade to make int(some_string) asymptotically faster (01:08:50) datetime now uses interpreter-local static types (01:09:55) PEP 749 enters the chat, paving the way to a PEP 649 future (01:11:35) os.fwalk, os.walk, shutil.rmtree now support arbitrary depth directory trees (01:14:13) Free-threading changes (01:22:15) OUTRO