How to generate coco keypoint format (json file)?

[Didi Ruhyadi]

Hy nice repository.
I'm curious how you can generate a json file from the coco keypoint dataset?. Is there a conversion code?
You linked to this repository, but there I found the dataset has been converted to json format.
In that repository I also found the coco.py code, is this the code used to generate the json file?

Thanks