Attest is a test automation framework for Python emphasising modern idioms and conventions.

from attest import Tests
math = Tests()

@math.test
def arithmetics():
    """Ensure that the laws of physics are in check."""
    assert 1 + 1 == 2

if __name__ == '__main__':
    math.run()

• Collect tests using decorators instead of matching names against a regexp
• Set up fixtures as context managers that can be combined and reused
• Use the assert statement with arbitrary expressions that are inspected on failure
• Scan for collections by type rather than by name
• Treat tests as Python packages rather than script files