This repo gives a single script that converts the deprecated pytables HDF5 state files used in datreant and mdsynthesis packages. This script should be used on files of the form:

Treant.<uuid>.h5

where Treant may be any of [Treant, Group, Sim], and is a string of characters. It will create a file with the same name but a different extension in the same directory:

Treant.<uuid>.json

This file will work with the latest versions of datreant/mdsynthesis as the state file for that Treant/Sim. The old .h5 file can be left if you're paranoid, but otherwise it is no longer used by the library.