Changes as per @abadger

contrib/inventory/ec2.py

@@ -1326,8 +1326,8 @@ class Ec2Inventory(object):
                 instance_vars["ec2_security_group_names"] = ','.join([str(i) for i in group_names])
             elif key == 'ec2_block_device_mapping':
                 instance_vars["ec2_block_devices"] = {}
-                for k, v in value.iteritems():
-                    instance_vars["ec2_block_devices"][ ( k.split( '/' ) )[ -1 ] ] = v.volume_id
+                for k, v in value.items():
+                    instance_vars["ec2_block_devices"][ os.path.basename(k) ] = v.volume_id
             else:
                 pass
                 # TODO Product codes if someone finds them useful