py-coverage integrates with Ned Batchelder's code coverage tool for Python (http://nedbatchelder.com/code/coverage/). After coverage data has been gathered, this plugin can be used to retrieve the results and present them in the relevant buffers. Source lines lacking coverage ("missing") may be indicated by directly highlighting the lines or by populating the quickfix or location lists. The function that retrieves the line numbers is also provided for low-level access.