解决了使用langchain调用聊天模型报的错

1、代码如下：

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#!/usr/bin/env python
# -*- coding: UTF-8 -*-


from langchain_community.chat_models import ChatTongyi
from langchain_core.messages import HumanMessage, SystemMessage
from dotenv import load_dotenv
import os

load_dotenv()

human_text = "你好啊"
system_text = "你是一个强大的助手，你的名字叫0713"
# 聊天模型
chat_model = ChatTongyi(
    api_key=os.getenv("DASHSCOPE_API_KEY"),
    base_url="https://dashscope.aliyuncs.com/compatible-mode/v1",
    model="qwen3.7-plus",  # 此处以qwen-plus为例，您可按需更换模型名称。模型列表：https://help.aliyun.com/zh/model-studio/getting-started/models
)

messages = [HumanMessage(content=human_text)]
# 聊天模型支持多个消息作为输入
# messages = [SystemMessage(content=system_text), HumanMessage(content=human_text)]

res = chat_model.invoke(messages)
print(res)

2、运行报错，截图如下：

报错内容如下：

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C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Scripts\python.exe C:\Users\lenovo\PycharmProjects\PythonProject\rag\day03\10-聊天模型.py 
C:\Users\lenovo\PycharmProjects\PythonProject\rag\day03\10-聊天模型.py:5: DeprecationWarning: `langchain-community` is being sunset and is no longer actively maintained. See https://github.com/langchain-ai/langchain-community/issues/674 for details and migration guidance toward standalone integration packages.
  from langchain_community.chat_models import ChatTongyi
C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\langchain_core\utils\pydantic.py:41: UserWarning: Core Pydantic V1 functionality isn't compatible with Python 3.14 or greater.
  from pydantic.v1 import BaseModel as BaseModelV1
Traceback (most recent call last):
  File "C:\Users\lenovo\PycharmProjects\PythonProject\rag\day03\10-聊天模型.py", line 25, in <module>
    res = chat_model.invoke(messages)
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\langchain_core\language_models\chat_models.py", line 474, in invoke
    self.generate_prompt(
    ~~~~~~~~~~~~~~~~~~~~^
        [self._convert_input(input)],
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<6 lines>...
        **kwargs,
        ^^^^^^^^^
    ).generations[0][0],
    ^
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\langchain_core\language_models\chat_models.py", line 1847, in generate_prompt
    return self.generate(prompt_messages, stop=stop, callbacks=callbacks, **kwargs)
           ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\langchain_core\language_models\chat_models.py", line 1654, in generate
    self._generate_with_cache(
    ~~~~~~~~~~~~~~~~~~~~~~~~~^
        m,
        ^^
    ...<2 lines>...
        **kwargs,
        ^^^^^^^^^
    )
    ^
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\langchain_core\language_models\chat_models.py", line 1994, in _generate_with_cache
    result = self._generate(
        messages, stop=stop, run_manager=run_manager, **kwargs
    )
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\langchain_community\chat_models\tongyi.py", line 674, in _generate
    resp = self.completion_with_retry(**params)
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\langchain_community\chat_models\tongyi.py", line 545, in completion_with_retry
    return _completion_with_retry(**kwargs)
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\tenacity\__init__.py", line 331, in wrapped_f
    return copy(f, *args, **kw)
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\tenacity\__init__.py", line 470, in __call__
    do = self.iter(retry_state=retry_state)
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\tenacity\__init__.py", line 371, in iter
    result = action(retry_state)
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\tenacity\__init__.py", line 393, in <lambda>
    self._add_action_func(lambda rs: rs.outcome.result())
                                     ~~~~~~~~~~~~~~~~~^^
  File "C:\Users\lenovo\AppData\Local\Programs\Python\Python314\Lib\concurrent\futures\_base.py", line 443, in result
    return self.__get_result()
           ~~~~~~~~~~~~~~~~~^^
  File "C:\Users\lenovo\AppData\Local\Programs\Python\Python314\Lib\concurrent\futures\_base.py", line 395, in __get_result
    raise self._exception
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\tenacity\__init__.py", line 473, in __call__
    result = fn(*args, **kwargs)
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\langchain_community\chat_models\tongyi.py", line 543, in _completion_with_retry
    return check_response(resp)
  File "C:\Users\lenovo\PycharmProjects\PythonProject\.venv\Lib\site-packages\langchain_community\llms\tongyi.py", line 61, in check_response
    raise ValueError(
    ...<3 lines>...
    )
ValueError: request_id: 3eafa40c-da7b-9164-a55b-112e3db1edea 
 status_code: 400 
 code: InvalidParameter 
 message: url error, please check url！ For details, see: https://help.aliyun.com/zh/model-studio/error-code#error-url

Process finished with exit code 1

3、查看了版本后

请教大佬，大佬说这块更新换代了，要换成如下代码：

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# 使用千问提供的模型调用模块     需下载模块  uv add langchain-qwq
from dotenv import load_dotenv
import os
# 加载环境变量
load_dotenv()

from langchain_qwq import ChatQwen
llm = ChatQwen(
    model="qwen3.6-plus",
    api_key=os.getenv("DASHSCOPE_API_KEY"),
    base_url=os.getenv("DASHSCOPE_BASE_URL"),
    max_tokens=3000,

)
result = llm.invoke("请介绍一下你自己！")
print(result.content)

先安装依赖：

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 pip install langchain_qwq

然后执行成功: