A first look at a faster, no-GIL Python

CPython's Global Interpreter Lock, or GIL, has long prevented it from being a truly parallel, multicore language. A new proposal, PEP 703, describes a roadmap to a new design for CPython that can use multithreading to properly unlock parallelism. Watch in this video as we use a prototype build of the "no-GIL" edition of Python to demonstrate how much faster code can be if this proposal takes off.

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[SouravBasuRoy]

this will make python #1 permanently, in the list of top programming languages

[christopherprobst-ranly]

It has no negative effect on async, its something entirely different. Even better, async will benefit as we can finally have truly multicore servers without using multiple processes.

[Oodle-oxvf]

Sounds promising, will need to introduced carefully. Can't wait to try it.

[yash]

0:51 > _"use threads to wait on network io or user io"_ good
4:15 approach used by the new no-GIL

[vihaanthora]

Thanks for the video, it summarized the no-gil version really well! I would love to see a video that would dive deeper in how the reference counting has changed in this version and why it is thread safe.
Cheers!

[ciberman]

I am a C# guy. I used Python for my degree thesis and my only concern with the language was the lack of a built in way of using class events (EventDispatcher or similar) and the GIL limitation for multithreading math heavy computation. I don't normally use python, but I am really glad that the GIL is being refactored.

[ThankYouESM]

During 2010, a friend of mine implemented a workaround way for Python to piggy-back on C to get the best of both worlds. He hated having to write in C, but... loved writing in Python... then years later created a way to get Python to write C. Sadly enough... he never shared that code with anybody.

[DanielCardenas]

Thanks Serdar! That was very informative! :)

[ApexArtistX]

Need this soon. For custom Gym and RL agents

[mattstroker]

Is Guido van Rossum also working on no-gil? Then I'm sure it'll be fine rather quickly. As soon as it's stable and out, I'm sure it'll be adopted really fast.

[pietraderdetective]

What kind of performance improvement can we expect? This coupled with Cython should be a speed demon?

[robertlawson]

But then, gliding over the horizon ... oh no, it's Mojo (a superset of Python) to the rescue. Dum Dum (ominous musical notes). To be continued ... maybe.

[shaurz]

But without gills, how will pythons breathe underwater?