Issue: Can't import Langchain

[sahaavi]

While trying to import langchain in Jupyter Notebook getting this error.

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/2.1.1/u/root-validator-pre-skip

Suggestion:

using langchain 0.0.27 version

[dosubot]

🤖

Hello,

Thank you for reaching out with your issue. It seems like you're encountering a problem with the Pydantic library version. This issue has been reported before in the LangChain repository, specifically in Issue: Can not import the Langchain modules..

The solution suggested in that issue was to downgrade the Pydantic library to version 1.10.9. You can do this by running the following command in your terminal:

pip install pydantic==1.10.9

After running this command, try importing LangChain again in your Jupyter Notebook. This solution has been confirmed to work by multiple users who encountered the same issue.

Please let me know if this resolves your issue or if you need further assistance.

Best regards,
Dosu

Sources

• Issue: Can not import the Langchain modules.

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[sahaavi]

Thanks @dosu-bot it solved the issue. Though I am able to import the latest version langchain now but it's giving import error while I am trying to import the HuggingFacePipeline

from langchain import HuggingFacePipeline
ImportError: cannot import name 'HuggingFacePipeline' from 'langchain'

[dosubot]

🤖

Hello,

Thank you for reaching out. Based on the error message you're receiving, it seems like there might be a misunderstanding about the structure of the LangChain library. The HuggingFacePipeline is not directly importable from langchain. It's actually a part of the llms module within LangChain.

You should be able to import it like this:

from langchain.llms import HuggingFacePipeline

If you're still encountering issues, it could be due to the huggingface_hub package not being installed or not being properly imported. You can install it using pip:

pip install huggingface_hub

Also, please ensure that the HUGGINGFACEHUB_API_TOKEN environment variable is set with your API token or passed as a named parameter to the constructor.

If you've confirmed that the huggingface_hub package is installed and you're still encountering the issue, it might be an issue with your Python environment or the huggingface_hub package itself. You might want to try creating a new Python environment and installing the huggingface_hub package there to see if that resolves the issue.

Please let me know if this helps or if you have any other questions.

Best,
Dosu

Sources

• libs/langchain/langchain/llms/huggingface_pipeline.py
• libs/langchain/langchain/embeddings/huggingface_hub.py
• libs/langchain/langchain/llms/huggingface_endpoint.py
• libs/langchain/langchain/llms/huggingface_hub.py
• libs/langchain/tests/integration_tests/llms/test_huggingface_pipeline.py

---

This response is meant to be useful and save you time. It is not meant to be a precise solution, but rather a starting point for your own research.

Help me be more useful! Please leave a 👍 if this is helpful and 👎 if it is irrelevant.

If you want to continue the conversation, start your reply with @dosu-bot.

[sahaavi]

Hi @dosu-bot tried using langchain.llms and created another virtual environment but still has the same error.

ImportError: cannot import name 'HuggingFacePipeline' from 'langchain.llms'

[dosubot]

🤖

Hello,

Thank you for reaching out. The ImportError you're encountering when trying to import the 'HuggingFacePipeline' from the 'llms' module within LangChain could be due to a couple of reasons:

1. The 'transformers' package is not installed: The 'HuggingFacePipeline' class in LangChain relies on the 'transformers' package from Hugging Face. If this package is not installed in your virtual environment, you will encounter an ImportError. You can install it using pip:

pip install transformers

2. Incorrect import statement: The correct way to import the 'HuggingFacePipeline' class is:

from langchain.llms.huggingface_pipeline import HuggingFacePipeline

If you've checked both of these potential issues and are still encountering the ImportError, there may be an issue with your Python environment or the LangChain installation. In this case, you might want to try reinstalling LangChain or creating a new Python virtual environment.

Please refer to the following sources for more information:

• libs/langchain/langchain/llms/huggingface_pipeline.py
• docs/extras/integrations/llms/huggingface_pipelines.ipynb
• libs/langchain/langchain/llms/huggingface_hub.py
• libs/langchain/tests/integration_tests/llms/test_huggingface_pipeline.py

I hope this helps! If you have any other questions or if the issue persists, please let me know.

Best,
Dosu

Sources

• libs/langchain/langchain/llms/huggingface_pipeline.py
• docs/extras/integrations/llms/huggingface_pipelines.ipynb
• libs/langchain/langchain/llms/huggingface_hub.py
• libs/langchain/tests/integration_tests/llms/test_huggingface_pipeline.py

---

This response is meant to be useful and save you time. It is not meant to be a precise solution, but rather a starting point for your own research.

Help me be more useful! Please leave a 👍 if this is helpful and 👎 if it is irrelevant.

If you want to continue the conversation, start your reply with @dosu-bot.

[medhsv]

I am trying the following code for importing huggingface pipeline
from langchain import HuggingFacePipeline

but unable to do so

please help anyone

I am running the code on Google Colab
This is my requirement install command:
!pip install -q transformers einops accelerate langchain bitsandbytes

I faced this issue today for the first time