Using the windows installer, there is no coveragepy directory created.
python COVERAGEDIR cannot be used
But, using the bitbucket clone, that directory is created
To use coverage with python, one can run
python -m coverage run sample.py
There is no equivalent for jython.
jython \coveragepy\__main__.py run sample.py does work
This seems like it is not what you intended.
jython \coveragepy\__main__.py html fails. The error is attached.
My environment is
Coverage.py, version 3.7.1
java version "1.7.0_65" Java(TM) SE Runtime Environment (build 1.7.0_65-b19) Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)