How to Fix Python Nose: Coverage not available: unable to import coverage module

Question

I can't seem to get code coverage with Nose to work, despite having the plugin installed.

Any ideas on how to fix this?

12:15:25 ~/sandbox/ec$ nosetests --plugins
Plugin xunit
Plugin deprecated
Plugin skip
Plugin multiprocess
Plugin failuredetail
Plugin capture
Plugin logcapture
Plugin coverage
Plugin attributeselector
Plugin doctest
Plugin profile
Plugin id
Plugin allmodules
Plugin collect-only
Plugin isolation
Plugin pdb

12:15:34 ~/sandbox/ec$ nosetests -v --with-coverage
nose.plugins.cover: ERROR: Coverage not available: unable to import coverage module
tests.edgecast_client_tests.test_log ... ok

----------------------------------------------------------------------
Ran 1 test in 0.206s

OK

Answer 1

Have you tried pip install coverage? The coverage plugin depends on separate coverage module, which is not a nose's dependency, so needs to be installed manually.

Answer 2

Validate if the coverage module is working by itself via coverage --version. I had a case that it was not working due to the lack of SQLite modules in my python installation from the source. I reinstalled python with SQLite extension to fix the issue.