docs: def nose_selector(test):
      """Return the string you can pass to nose to run `test`, including argument
      values if the test was made by a test generator.
  
      Return "Unknown test" if it can't construct a decent path.
  
      """
      address = test_address(test)
      if address:
          file, module, rest = address
  
          if module:
              if rest:
                  try:
                      return '%s:%s%s' % (module, rest, test.test.arg or '')
                  except AttributeError:
                      return '%s:%s' % (module, rest)
              else:
                  return module
      return 'Unknown test'