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-rw-r--r--taskflow/engines/action_engine/scopes.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/taskflow/engines/action_engine/scopes.py b/taskflow/engines/action_engine/scopes.py
index 01a7546..3c1c018 100644
--- a/taskflow/engines/action_engine/scopes.py
+++ b/taskflow/engines/action_engine/scopes.py
@@ -81,7 +81,7 @@ class ScopeWalker(object):
if self._predecessors is None:
predecessors = set(
node for node in graph.bfs_predecessors_iter(self._atom)
- if graph.node[node]['kind'] in co.ATOMS)
+ if graph.nodes[node]['kind'] in co.ATOMS)
self._predecessors = predecessors.copy()
else:
predecessors = self._predecessors.copy()