Update tongyi.py to support MultimodalConversation in dashscope.

libs/community/langchain_community/chat_models/tongyi.py

@@ -241,8 +241,14 @@ def lc_secrets(self) -> Dict[str, str]:
 
  client: Any #: :meta private:
  model_name: str = Field(default="qwen-turbo", alias="model")
-
- """Model name to use."""
+ """Model name to use.
+ callable multimodal model:
+ - qwen-vl-v1
+ - qwen-vl-chat-v1
+ - qwen-audio-turbo
+ - qwen-vl-plus
+ - qwen-vl-max
+ """
  model_kwargs: Dict[str, Any] = Field(default_factory=dict)
 
  top_p: float = 0.8
@@ -280,18 +286,34 @@ def validate_environment(cls, values: Dict) -> Dict:
  "Could not import dashscope python package. "
  "Please install it with `pip install dashscope --upgrade`."
  )
- try:
- if "vl" in values["model_name"]:
+ dashscope_multimodal_models = [
+ "qwen-vl-v1",
+ "qwen-vl-chat-v1",
+ "qwen-audio-turbo",
+ "qwen-vl-plus",
+ "qwen-vl-max",
+ ]
+ if (
+ values["model_name"] in dashscope_multimodal_models
+ or "vl" in values["model_name"]
+ ):
+ try:
  values["client"] = dashscope.MultiModalConversation
- else:
+ except AttributeError:
+ raise ValueError(
+ "`dashscope` has no `MultiModalConversation` attribute, this is "
+ "likely due to an old version of the dashscope package. Try "
+ "upgrading it with `pip install --upgrade dashscope`."
+ )
+ else:
+ try:
  values["client"] = dashscope.Generation
- except AttributeError:
- raise ValueError(
- "`dashscope` has no `Generation` attribute, this is likely "
- "due to an old version of the dashscope package. Try upgrading it "
- "with `pip install --upgrade dashscope`."
- )
-
+ except AttributeError:
+ raise ValueError(
+ "`dashscope` has no `Generation` attribute, this is likely "
+ "due to an old version of the dashscope package. Try upgrading it "
+ "with `pip install --upgrade dashscope`."
+ )
  return values
 
  @property