fix: correct exception types in transcription modules

BaseAsyncApi uses sync requests.Session() under the hood (the "Async"
refers to DashScope server-side task polling, not Python async I/O).
Switch from asyncio/aiohttp exceptions to requests.Timeout and
requests.ConnectionError to ensure retry logic actually catches
real network errors.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: zhansheng.lzs

dashscope/audio/asr/transcription.py

@@ -1,11 +1,10 @@
 # -*- coding: utf-8 -*-
 # Copyright (c) Alibaba, Inc. and its affiliates.
 
-import asyncio
 import time
 from typing import List, Union
 
-import aiohttp
+import requests
 
 from dashscope.api_entities.dashscope_response import (
     DashScopeAPIResponse,
@@ -148,7 +147,7 @@ def fetch(
                     workspace=workspace,
                     **kwargs,
                 )
-            except (asyncio.TimeoutError, aiohttp.ClientConnectorError) as e:
+            except (requests.Timeout, requests.ConnectionError) as e:
                 logger.debug(e)
                 try_count += 1
                 if try_count <= Transcription.MAX_QUERY_TRY_COUNT:
@@ -230,7 +229,7 @@ def _launch_request(
                     workspace=workspace,
                     **kwargs,
                 )
-            except (asyncio.TimeoutError, aiohttp.ClientConnectorError) as e:
+            except (requests.Timeout, requests.ConnectionError) as e:
                 logger.debug(e)
                 try_count += 1
                 if try_count <= Transcription.MAX_QUERY_TRY_COUNT:

dashscope/audio/qwen_asr/qwen_transcription.py

@@ -1,11 +1,10 @@
 # -*- coding: utf-8 -*-
 # Copyright (c) Alibaba, Inc. and its affiliates.
 
-import asyncio
 import time
 from typing import Union
 
-import aiohttp
+import requests
 
 from dashscope.api_entities.dashscope_response import (
     DashScopeAPIResponse,
@@ -108,7 +107,7 @@ def fetch(
                     workspace=workspace,
                     **kwargs,
                 )
-            except (asyncio.TimeoutError, aiohttp.ClientConnectorError) as e:
+            except (requests.Timeout, requests.ConnectionError) as e:
                 logger.debug(e)
                 try_count += 1
                 if try_count <= QwenTranscription.MAX_QUERY_TRY_COUNT:
@@ -186,7 +185,7 @@ def _launch_request(
                     workspace=workspace,
                     **kwargs,
                 )
-            except (asyncio.TimeoutError, aiohttp.ClientConnectorError) as e:
+            except (requests.Timeout, requests.ConnectionError) as e:
                 logger.debug(e)
                 try_count += 1
                 if try_count <= QwenTranscription.MAX_QUERY_TRY_COUNT: