diff --git a/metagpt/actions/write_prd.py b/metagpt/actions/write_prd.py
index bb0cf8fb9..adba7decb 100644
--- a/metagpt/actions/write_prd.py
+++ b/metagpt/actions/write_prd.py
@@ -182,7 +182,7 @@ class WritePRD(Action):
                 return
 
         if not CONFIG.project_name:
-            if isinstance(prd, ActionOutput) or isinstance(prd, ActionNode):
+            if isinstance(prd, (ActionOutput, ActionNode)):
                 ws_name = prd.instruct_content.dict()["Project Name"]
             else:
                 ws_name = CodeParser.parse_str(block="Project Name", text=prd)
diff --git a/metagpt/roles/role.py b/metagpt/roles/role.py
index 48688ad5f..e13bf454b 100644
--- a/metagpt/roles/role.py
+++ b/metagpt/roles/role.py
@@ -267,7 +267,7 @@ class Role:
     async def _act(self) -> Message:
         logger.info(f"{self._setting}: ready to {self._rc.todo}")
         response = await self._rc.todo.run(self._rc.important_memory)
-        if isinstance(response, ActionOutput) or isinstance(response, ActionNode):
+        if isinstance(response, (ActionOutput, ActionNode)):
             msg = Message(
                 content=response.content,
                 instruct_content=response.instruct_content,
diff --git a/metagpt/roles/searcher.py b/metagpt/roles/searcher.py
index 5760202ff..31de8e896 100644
--- a/metagpt/roles/searcher.py
+++ b/metagpt/roles/searcher.py
@@ -59,7 +59,7 @@ class Searcher(Role):
         logger.info(f"{self._setting}: ready to {self._rc.todo}")
         response = await self._rc.todo.run(self._rc.memory.get(k=0))
 
-        if isinstance(response, ActionOutput) or isinstance(response, ActionNode):
+        if isinstance(response, (ActionOutput, ActionNode)):
             msg = Message(
                 content=response.content,
                 instruct_content=response.instruct_content,
diff --git a/metagpt/utils/common.py b/metagpt/utils/common.py
index bf435b74f..fa18694e3 100644
--- a/metagpt/utils/common.py
+++ b/metagpt/utils/common.py
@@ -197,7 +197,7 @@ class OutputParser:
                 result = ast.literal_eval(structure_text)
 
                 # Ensure the result matches the specified data type
-                if isinstance(result, list) or isinstance(result, dict):
+                if isinstance(result, (list, dict)):
                     return result
 
                 raise ValueError(f"The extracted structure is not a {data_type}.")