Description:

A test framework that extends Python’s built-in unit test module and Nose
with features from TestNG, such as:

- Uses decorators instead of naming conventions.
- Allows for TestNG style test methods, in which a class is initialized once
as an alternative to using class fields (see the example below).
- Allows for explicit test dependencies and skipping of dependent tests
on failures.
- Runs xUnit style classes if desired or needed for backwards compatibility.
- Uses Nose if available (but doesn't require it), and works with many of
its plugins.
- Runs in IronPython and Jython (although if you're targeting the JVM you
should consider using TestNG instead).