unpack cycle node

matthiasdiener · matthiasdiener · commit 4388cda1a6ec · 2022-11-21T14:05:33.000-06:00
diff --git a/pytato/distributed.py b/pytato/distributed.py
@@ -1254,7 +1254,7 @@ def add_needed_pid(pid: _DistributedPartId,
         try:
             compute_topological_order(pid_to_needed_pids)
         except CycleError as err:
-            raise PartitionInducedCycleError(err)
+            raise PartitionInducedCycleError(err.node)
 
         logger.info("verify_distributed_partition completed successfully.")
 
