The pytest testing tool makes it easy to write small tests, yet scales to support complex functional testing.

Documentation: http://pytest.org/latest/

Changelog: http://pytest.org/latest/changelog.html

Issues: https://github.com/pytest-dev/pytest/issues

• auto-discovery of test modules and functions,
• detailed info on failing assert statements (no need to remember self.assert* names)
• modular fixtures for managing small or parametrized long-lived test resources.
• multi-paradigm support: you can use pytest to run test suites based on unittest (or trial), nose
• single-source compatibility from Python2.6 all the way up to Python3.5, PyPy-2.3, (jython-2.5 untested)
• many external plugins.

A simple example for a test:

# content of test_module.py
def test_function():
    i = 4
    assert i == 3

which can be run with py.test test_module.py. See getting-started for more examples.

For much more info, including PDF docs, see

http://pytest.org

and report bugs at:

https://github.com/pytest-dev/pytest/issues

and checkout or fork repo at:

https://github.com/pytest-dev/pytest

Copyright Holger Krekel and others, 2004-2015 Licensed under the MIT license.