I'm using the default separator of /. I can't retrieve anything if any keys have a / in them. I could change the separator but might run into another problem. I suspect that it could be modified to not care about what data is in the keys.

  File "/Users/marca/dev/surveymonkey/InventorySvc/.tox/py27/lib/python2.7/site-packages/dpath/path.py", line 57, in validate
    separator))
InvalidKeyName: /dev/sdc6 at ansible_facts/ohai_filesystem contains the separator /