

def __init__(self, field_name, exist_id, uuid):
    self.field_name = field_name
    self.reason = 'Failed at {failed_at} UTC for {uuid}: {field_name} field was null for exist id {exist_id}'.format(failed_at=datetime.datetime.utcnow(), uuid=uuid, field_name=field_name, exist_id=exist_id)

dataset/ETHPy150Open openstack/stacktach/verifier/__init__.py NullFieldException.__init__/original