If you are looking for the official yt-project repository, here is the official link to their bitbucket:
https://bitbucket.org/yt_analysis/yt/
This is a draft of a HDF5 reader implementation for openPMD in yt-project.org
Some sizes are still fixed to our example data sets and particlePatch supports needs to be added for parallel data processing.
If you are a python hacker, you might enjoy the current draft and feel free to contribute :)
The files for new reader implementations are in
and examples are stored in our repo