from Hacker News

Python 3.14 Getting New Interpreter

by alexfromapex on 2/10/25, 12:54 PM with 22 comments

• by haberman on 2/10/25, 6:35 PM

  I blogged about this: https://blog.reverberate.org/2025/02/10/tail-call-updates.ht...

  It uses a technique I published several years ago for writing fast interpreters with tail calls: https://blog.reverberate.org/2021/04/21/musttail-efficient-i...

  There is also this tweet from the author: https://x.com/kenjin4096/status/1887935698906529903

• by madspindel on 2/10/25, 4:27 PM

  > Preliminary numbers on our machines suggest anywhere from -3% to 30% faster Python code, and a geometric mean of 9-15% faster on pyperformance depending on platform and architecture.

  Nice!

• by codr7 on 2/10/25, 1:27 PM

  I get the feeling that Python is finally reaching the critical mass needed to significantly improve performance, good times.

• by ninetyninenine on 2/12/25, 11:58 AM

  They didn’t add tail calls for the longest time because it blows the stack and makes it harder to debug when stepping through code. Maybe they should make a keyword in Python to explicitly enable tail call recursion when it’s needed.

• by theandrewbailey on 2/10/25, 1:18 PM

  Pi-thon.