Can subinterpreters free us from Python's GIL?

Have you heard that Python is not good for writing concurrent asynchronous code? This is generally a misconception. But there is one class of parallel computing that Python is not good at: CPU bound work running the Python layer.

What's the main problem? It's Python's GIL or Global Interpreter Lock of course. Yet, the fix for this restriction may have been hiding inside CPython since version 1.5: subinterpreters.

Join me to talk about PEP 554 with core developer Eric Snow.
Links from the show