fix AttributeError

diff --git a/sfa/planetlab/plslices.py b/sfa/planetlab/plslices.py
index eb60066..94a7c4e 100644 (file)
--- a/sfa/planetlab/plslices.py
+++ b/sfa/planetlab/plslices.py
@@ -362,7 +362,7 @@ class PlSlices:
                 # unbind from peer so we can modify if necessary. Will bind back later
                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
                #Update existing record (e.g. expires field) it with the latest info.
-            if slice_record.get('expires'):
+            if slice_record and slice_record.get('expires'):
                 requested_expires = int(datetime_to_epoch(utcparse(slice_record['expires'])))
                 if requested_expires and slice['expires'] != requested_expires:
                     self.driver.shell.UpdateSlice( slice['slice_id'], {'expires' : requested_expires})