Update monai/bundle/workflows.py

Co-authored-by: Eric Kerfoot <[email protected]>
Signed-off-by: YunLiu <[email protected]>

Author: KumoLiu

monai/bundle/workflows.py

@@ -395,6 +395,9 @@ def check_properties(self) -> list[str] | None:
         return ret
 
     def _run_expr(self, id: str, **kwargs: dict) -> list[Any]:
+        """
+        Evaluate the expression or expression list given by `id`. The resolved values from the evaluations are not stored, allowing this to be evaluated repeatedly (eg. in streaming applications) without restarting the hosting process.
+        """
         ret = []
         if id in self.parser:
             # suppose all the expressions are in a list, run and reset the expressions