←back to thread

Hand Tracking for Mouse Input (2023)

(chernando.com)
220 points wonger_ | 1 comments | 19 Nov 24 17:18 UTC | HN request time: 0.201s | source
Show context
aranelsurion ◴[19 Nov 24 18:38 UTC] No.42186730[source]▶
> Python version is super laggy, something to do with OpenCV

Most probably I'm wrong, but I wonder if it has anything to do with all the text being written to stdout. In the odd chance that it happens on the same thread, it might be blocking.

replies(2): >>42186797 #>>42191871 #
ikanreed ◴[19 Nov 24 18:46 UTC] No.42186797[source]▶
Could it then be resolved by using the no-gil version of python they just released?
replies(1): >>42186900 #
1. mananaysiempre ◴[19 Nov 24 18:59 UTC] No.42186900[source]▶
I’m not sure what your reasoning is, but note that blocking I/O including print() releases the GIL. (So your seemingly innocent debugging print can be extremely not harmless under the wrong circumstances.)