The glance documentation states that None (empty image) is a valid return value. We have to handle this. https://docs.openstack.org/python-glanceclient/latest/reference/api/glanceclient.v2.images.html#glanceclient.v2.images.Controller.data
"Returns: An iterable body or None"
The glance documentation states that None (empty image) is a valid return value. We have to handle this. /docs.openstack .org/python- glanceclient/ latest/ reference/ api/glanceclien t.v2.images. html#glanceclie nt.v2.images. Controller. data
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"Returns: An iterable body or None"