fix comment

src/promptflow-core/promptflow/executor/_script_executor.py

@@ -72,14 +72,15 @@ def __init__(
         self._message_format = MessageFormatType.BASIC
         self._multimedia_processor = BasicMultimediaProcessor()
 
-    def _get_func_name(self):
+    @classmethod
+    def _get_func_name(cls, func: Callable):
         try:
-            original_func = getattr(self._func, "__original_function")
+            original_func = getattr(func, "__original_function")
             if isinstance(original_func, partial):
                 original_func = original_func.func
             return original_func.__qualname__
         except AttributeError:
-            return self._func.__qualname__
+            return func.__qualname__
 
     @contextlib.contextmanager
     def _exec_line_context(self, run_id, line_number):
@@ -158,7 +159,7 @@ def _exec_line(
             error_type_and_message = f"({e.__class__.__name__}) {e}"
             ex = ScriptExecutionError(
                 message_format="Execution failure in '{func_name}': {error_type_and_message}",
-                func_name=self._get_func_name(),
+                func_name=self._func_name,
                 error_type_and_message=error_type_and_message,
                 error=e,
             )
@@ -460,6 +461,7 @@ def _initialize_function(self):
         else:
             self._func = func
             self._func_async = sync_to_async(func)
+        self._func_name = self._get_func_name(func=func)
         return func
 
     def _initialize_aggr_function(self, flow_obj: object):

src/promptflow-core/tests/core/e2etests/test_eager_flow.py

@@ -203,3 +203,9 @@ def test_aggregation_error(self):
             aggr_result = executor._exec_aggregation(inputs=[line_result.output])
             # exec aggregation won't fail with error
             assert aggr_result.metrics == {}
+
+    def test_get_function_name(self):
+        expected_names = ["ClassEntry.__call__", "func_entry", "func_entry_async"]
+        for (entry, _, _), expected_name in zip(function_entries, expected_names):
+            executor = FlowExecutor.create(entry, {})
+            assert executor._func_name == expected_name