I'm trying to use coverage.py on my unittest-based tests.
I see that there are multiple kinds of paths and they're not collated, so the coverage data is wrong.
/home/travis/virtualenv/python3.6.3/lib/python3.6/site-packages/<package>/file.py
/<package>/file.py
something.py
How can I tell coverage.py to treat the paths the same (e.g. to remove the "/home/travis/virtualenv/python3.6.3/lib/python3.6/site-packages" prefix)?