title: What numbers can you pass as verbosity in running Python Unit Test Suites?
body: <p>The Python unittest framework has a concept of verbosity that I can't seem to find defined anywhere. For instance, I'm running test cases like this (<a href="http://docs.python.org/library/unittest.html#basic-example" rel="noreferrer">like in the documentation</a>):</p>
  
  <pre><code>suite = unittest.TestLoader().loadTestsFromTestCase(MyAwesomeTest)
  unittest.TextTestRunner(verbosity=2).run(suite)
  </code></pre>
  
  <p>The only number I've ever seen passed as verbosity is 2. What is this magic number, what does it mean, what what else can I pass?</p>