Changing standard (Python) test discovery =============================================== changing directory recursion ----------------------------------------------------- You can set the :confval:`norecursedirs` option in an ini-file, for example your ``setup.cfg`` in the project root directory:: # content of setup.cfg [pytest] norecursedirs = .svn _build tmp* This would tell py.test to not recurse into typical subversion or sphinx-build directories or into any ``tmp`` prefixed directory. always try to interpret arguments as Python packages ----------------------------------------------------- You can use the ``--pyargs`` option to make py.test try interpreting arguments as python package names, deriving their file system path and then running the test. Through an ini-file and the :confval:`addopts` option you can make this change more permanently:: # content of setup.cfg or tox.ini [pytest] addopts = --pyargs finding out what is collected ----------------------------------------------- You can always peek at the collection tree without running tests like this:: . $ py.test --collectonly collectonly.py