'Make sure either support email or support url are present.'

def clean_support_fields(self):

    if (('support_email' in self._errors) or ('support_url' in self._errors)):
        return
    support_email = self.get_default_translation_for('support_email')
    support_url = self.get_default_translation_for('support_url')
    if ((not support_email) and (not support_url)):
        self._errors['support'] = self.error_class([_('You    must    provide    either    a    website,    an    email,    or    both.')])
        self._errors['support_email'] = self.error_class([''])
        self._errors['support_url'] = self.error_class([''])
