Chamomile

Chamomile makes it more pleasant to make assertions inside your Python unit tests. It borrows heavily from Jasmine's assertion syntax. Take a look:

import chamomile

class ExampleTest(chamomile.Test):
    def test_simple_assertions(self):
        self.expect(12).to_equal(12)
        self.expect(False).to_not_be(0)

        with self.expect(ZeroDivsionError):
            4 / 0

You can easily browse the full list of available assertions in the source.