在StreamLit上部署（和托管）LangChain代码会引发PydanticUserError。

huangapple
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英文:

Deploying (and hosting) a LangChain code on StreamLit throws PydanticUserError

问题

我使用LangChain、OpenAI（嵌入和LLM）以及Chroma（用于存储向量嵌入）构建了一个PDF文档问答系统，并使用StreamLit创建了用户界面（UI）。我尝试使用StreamLit云服务部署和托管Web应用程序。在安装所有必需的库和软件包后，Web应用程序抛出了以下错误：

  1. PydanticUserError: 如果您使用`@root_validator`并且pre=False（默认设置），则必须指定`skip_on_failure=True`。请注意，`@root_validator`已弃用，应替换为`@model_validator`。有关更多信息，请访问https://errors.pydantic.dev/2.0.2/u/root-validator-pre-skip

随后是一个Traceback（回溯）：

  1. Traceback:
  2.     File "/opt/render/project/src/.venv/lib/python3.7/site-packages/streamlit/runtime/scriptrunner/script_runner.py", line 552, in _run_script
  3.     exec(code, module.__dict__)
  4. File "/opt/render/project/src/app.py", line 3, in <module>
  5.     from langchain.document_loaders import PyMuPDFLoader, PyPDFLoader
  6. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/__init__.py", line 8, in <module>
  7.     from langchain.agents import MRKLChain, ReActChain, SelfAskWithSearchChain
  8. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/agents/__init__.py", line 2, in <module>
  9.     from langchain.agents.agent import Agent
  10. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/agents/agent.py", line 10, in <module>
  11.     from langchain.chains.base import Chain
  12. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/chains/__init__.py", line 2, in <module>
  13.     from langchain.chains.conversation.base import ConversationChain
  14. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/chains/conversation/base.py", line 7, in <module>
  15.     from langchain.chains.conversation.memory import ConversationBufferMemory
  16. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/chains/conversation/memory.py", line 7, in <module>
  17.     from langchain.chains.conversation.prompt import SUMMARY_PROMPT
  18. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/chains/conversation/prompt.py", line 2, in <module>
  19.     from langchain.prompts.prompt import PromptTemplate
  20. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/prompts/__init__.py", line 2, in <module>
  21.     from langchain.prompts.base import BasePromptTemplate
  22. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/prompts/base.py", line 35, in <module>
  23.     class BasePromptTemplate(BaseModel, ABC):
  24. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/prompts/base.py", line 41, in BasePromptTemplate
  25.     @root_validator()
  26. File "/opt/render/project/src/.venv/lib/python3.7/site-packages/pydantic/deprecated/class_validators.py", line 231, in root_validator
  27.     code='root-validator-pre-skip',

如何处理这个错误，尽管我相信我已安装了所有必要的库和兼容版本？

我尝试查看错误显示的URL，但找不到足够好的内容来调试错误。

英文:

I built a pdf document question-answering using LangChain, OpenAI (embeddings and LLM) and Chroma (for storing the vector embeddings) and UI with StreamLit. I am trying to deploy and host the webapp using StreamLit cloud services. And on installing all the required libraries and packages, the webapp throws an error:

  1. PydanticUserError: If you use `@root_validator` with pre=False (the default) you MUST specify `skip_on_failure=True`. Note that `@root_validator` is deprecated and should be replaced with `@model_validator`. For further information visit https://errors.pydantic.dev/2.0.2/u/root-validator-pre-skip

followed by a Traceback:

  1. Traceback:
  2.     File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/streamlit/runtime/scriptrunner/script_runner.py&quot;, line 552, in _run_script
  3.     exec(code, module.__dict__)
  4. File &quot;/opt/render/project/src/app.py&quot;, line 3, in &lt;module&gt;
  5.     from langchain.document_loaders import PyMuPDFLoader, PyPDFLoader
  6. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/__init__.py&quot;, line 8, in &lt;module&gt;
  7.     from langchain.agents import MRKLChain, ReActChain, SelfAskWithSearchChain
  8. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/agents/__init__.py&quot;, line 2, in &lt;module&gt;
  9.     from langchain.agents.agent import Agent
  10. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/agents/agent.py&quot;, line 10, in &lt;module&gt;
  11.     from langchain.chains.base import Chain
  12. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/chains/__init__.py&quot;, line 2, in &lt;module&gt;
  13.     from langchain.chains.conversation.base import ConversationChain
  14. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/chains/conversation/base.py&quot;, line 7, in &lt;module&gt;
  15.     from langchain.chains.conversation.memory import ConversationBufferMemory
  16. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/chains/conversation/memory.py&quot;, line 7, in &lt;module&gt;
  17.     from langchain.chains.conversation.prompt import SUMMARY_PROMPT
  18. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/chains/conversation/prompt.py&quot;, line 2, in &lt;module&gt;
  19.     from langchain.prompts.prompt import PromptTemplate
  20. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/prompts/__init__.py&quot;, line 2, in &lt;module&gt;
  21.     from langchain.prompts.base import BasePromptTemplate
  22. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/prompts/base.py&quot;, line 35, in &lt;module&gt;
  23.     class BasePromptTemplate(BaseModel, ABC):
  24. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/langchain/prompts/base.py&quot;, line 41, in BasePromptTemplate
  25.     @root_validator()
  26. File &quot;/opt/render/project/src/.venv/lib/python3.7/site-packages/pydantic/deprecated/class_validators.py&quot;, line 231, in root_validator
  27.     code=&#39;root-validator-pre-skip&#39;,

How to deal with this error, although I believe I have installed all the necessary packages with compatible versions?

I am trying to see the url that the error shows but could not find anything good enough to debug the error.

答案1

得分: 1

尝试这个：

  1. pip install ydata-profiling
英文:

Try this:

  1. pip install ydata-profiling

答案2

得分: 0

我一直在阅读这个帖子并尝试不同版本的langchain和pydantic。在Pydantic 1.10.9和Langchain 0.0.231上仍然失败。

链接：https://stackoverflow.com/questions/76614379/roo-validator-error-when-importing-langchain-text-splitter-python

英文:

I have been reading this thread and trying different versions of langchain an pydantic. Still failing with Pydantic 1.10.9 and Langchain 0.0.231.

https://stackoverflow.com/questions/76614379/roo-validator-error-when-importing-langchain-text-splitter-python

huangapple
  • 本文由 发表于 2023年7月10日 14:54:01
  • 转载请务必保留本文链接：https://go.coder-hub.com/76651314.html
  • langchain
  • nlp-question-answering
  • openai-api
  • pydantic
  • streamlit
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