Reporting

It is possible to generate any combination of the reports for a single test run.

The available reports are terminal (with or without missing line numbers shown), HTML, XML, JSON, LCOV and annotated source code.

The terminal report without line numbers (default):

pytest --cov-report term --cov=myproj tests/

-------------------- coverage: platform linux2, python 2.6.4-final-0 ---------------------
Name                 Stmts   Miss  Cover
----------------------------------------
myproj/__init__          2      0   100%
myproj/myproj          257     13    94%
myproj/feature4286      94      7    92%
----------------------------------------
TOTAL                  353     20    94%

The terminal report with line numbers:

pytest --cov-report term-missing --cov=myproj tests/

-------------------- coverage: platform linux2, python 2.6.4-final-0 ---------------------
Name                 Stmts   Miss  Cover   Missing
--------------------------------------------------
myproj/__init__          2      0   100%
myproj/myproj          257     13    94%   24-26, 99, 149, 233-236, 297-298, 369-370
myproj/feature4286      94      7    92%   183-188, 197
--------------------------------------------------
TOTAL                  353     20    94%

The terminal report with skip covered:

pytest --cov-report term:skip-covered --cov=myproj tests/

-------------------- coverage: platform linux2, python 2.6.4-final-0 ---------------------
Name                 Stmts   Miss  Cover
----------------------------------------
myproj/myproj          257     13    94%
myproj/feature4286      94      7    92%
----------------------------------------
TOTAL                  353     20    94%

1 files skipped due to complete coverage.

You can use skip-covered with term-missing as well. e.g. --cov-report term-missing:skip-covered

These four report options output to files without showing anything on the terminal:

pytest --cov-report html
        --cov-report xml
        --cov-report json
        --cov-report lcov
        --cov-report annotate
        --cov=myproj tests/

The output location for each of these reports can be specified. The output location for the XML, JSON and LCOV report is a file. Where as the output location for the HTML and annotated source code reports are directories:

pytest --cov-report html:cov_html
        --cov-report xml:cov.xml
        --cov-report json:cov.json
        --cov-report lcov:cov.info
        --cov-report annotate:cov_annotate
        --cov=myproj tests/

The final report option can also suppress printing to the terminal:

pytest --cov-report= --cov=myproj tests/

This mode can be especially useful on continuous integration servers, where a coverage file is needed for subsequent processing, but no local report needs to be viewed. For example, tests run on GitHub Actions could produce a .coverage file for use with Coveralls.