Manage DFT training data and making JSON data set

[Rana-Phy]

Dear Developers,

Greetings. Last night I watched a demo here, https://www.youtube.com/watch?v=GiebtsjYfgs
This is interesting. I have a very basic query.
Would you kindly help me to know how to extract data from OUTCAR/vasprun.xml file and write a dict contains one structure with data. For multiple structures how can I merge them in a single json file. If you share any script/tool that will be very helpful.
I will wait to hear from you.

Thanks.