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community: tongyi multimodal response format fix to support langchain #28210

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community: tongyi multimodal response format fix to support langchain #28210

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b72c98a
fix: tongyi multimodal response format fix to support langchain
achenglike Nov 19, 2024
be91635
fix: code line too long
achenglike Nov 19, 2024
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16 changes: 16 additions & 0 deletions libs/community/langchain_community/chat_models/tongyi.py
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Original file line number Diff line number Diff line change
Expand Up @@ -547,6 +547,7 @@ def _stream_completion_with_retry(**_kwargs: Any) -> Any:
if _kwargs.get("stream") and not _kwargs.get(
"incremental_output", False
):
resp = self.fix_response_text(resp)
if prev_resp is None:
delta_resp = resp
else:
Expand All @@ -557,6 +558,21 @@ def _stream_completion_with_retry(**_kwargs: Any) -> Any:
yield check_response(resp)

return _stream_completion_with_retry(**kwargs)

def fix_response_text(self, resp: Any) -> Any:
"""reponse ` {"role": "assistant", "content": [{"text": "图像"}]}}]}`
is not working for langchain
"""

resp_copy = json.loads(json.dumps(resp))
choice = resp_copy["output"]["choices"][0]
message = choice["message"]
if isinstance(message.get('content'), list):
content_text = "".join(item.get('text', '')
for item in message['content'] if isinstance(item, dict))
message['content'] = content_text

return resp_copy

def subtract_client_response(self, resp: Any, prev_resp: Any) -> Any:
"""Subtract prev response from curr response.
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