def clean_mail_host(self):
        # Strip whitespaces from the SMTP address.
        return self.cleaned_data['mail_host'].strip()
Verify sources can be represented.
dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/admin/forms.py/EMailSettingsForm.clean_mail_host--crossover with--dataset/ETHPy150Open jacebrowning/gitman/gitman/test/test_models_source.py/TestSource.test_repr_no_link