tweak

csst_dag/dag/_base_dag.py

@@ -165,7 +165,7 @@ class BaseDAG:
     @staticmethod
     def force_string(d: dict):
         for k, v in d.items():
-            d.__setattr__(k, str(v))
+            d[k] = str(v)
         return d
 
     def gen_dag_run(self, **kwargs) -> dict: