def attach(self, filename=None, content=None, mimetype=None):
        if isinstance(filename, MIMEBase):
            assert content == mimetype == None
            self.attachments.append(filename)
        else:
            assert content is not None
            self.attachments.append((filename, content, mimetype))
Need to override libcloud to find the zone.
dataset/ETHPy150Open CollabQ/CollabQ/vendor/django/core/mail.py/EmailMessage.attach--crossover with--dataset/ETHPy150Open saltstack/salt/salt/cloud/clouds/gce.py/__get_location