Python 2.3 compatibility: Fixed a test to only run under 2.4+, since it fails...

    def test_broken_app(self):

        "manage.py validate reports an ImportError if an app's models.py raises one on import"

        self.write_settings('settings.py', apps=['admin_scripts.broken_app'])

        # Skip this test on Python 2.3, where a 2nd attempt to import a broken module won't raise

        # an error. Due to the way models modules are loaded and re-tried if the first attempt

        # fails, Django needs the 2nd attempt to fail, but on Python 2.3 that does not happen, thus

        # this function only works on higher levels of Python.

        if sys.version_info >= (2, 4):

            args = ['validate']

            out, err = self.run_manage(args)

            self.assertNoOutput(out)