fix test

api/tests/unit_tests/core/workflow/nodes/answer/test_answer.py

@@ -87,7 +87,8 @@ def test_execute_answer():
 
 
 def test_execute_answer_with_outputs():
-    from core.workflow.enums import SystemVariableKey  # 确保函数作用域内可用
+    from core.workflow.enums import SystemVariableKey  
+
     """Test Answer node with custom output variables"""
     graph_config = {
         "edges": [
@@ -175,7 +176,8 @@ def test_execute_answer_with_outputs():
 
 
 def test_execute_answer_with_empty_outputs():
-    from core.workflow.enums import SystemVariableKey  # 确保函数作用域内可用
+    from core.workflow.enums import SystemVariableKey  
+
     """Test Answer node with empty outputs configuration"""
     graph_config = {
         "edges": [