It’s high time. Python 3, with countless technical and end-user enhancements over Python 2, has never been in a better position to permanently displace Python 2.

An experimental ‘no-GIL’ build mode in Python 3.13 disables the Global Interpreter Lock to enable true parallel execution in Python. Here’s where to start.

Python 2 may be reaching end of life, but old Python 2 code will remain around for years to come.