ModuleNotFound error in using UnstructuredRSTLoader

maxscott commented 10 months ago

System Info

Virtualenv

Python: 3.11.6 Implementation: CPython Path: /Users/max/Library/Caches/pypoetry/virtualenvs/qa-oj4cEcx-py3.11 Executable: /Users/max/Library/Caches/pypoetry/virtualenvs/qa-oj4cEcx-py3.11/bin/python Valid: True

System

Platform: darwin OS: posix Python: 3.11.6 Path: /usr/local/opt/python@3.11/Frameworks/Python.framework/Versions/3.11 Executable: /usr/local/opt/python@3.11/Frameworks/Python.framework/Versions/3.11/bin/python3.11

Who can help?

@eyurtsev @baskaryan (https://github.com/langchain-ai/langchain/pull/14463)

Information

[X] The official example notebooks/scripts
[ ] My own modified scripts

Related Components

[ ] LLMs/Chat Models
[ ] Embedding Models
[ ] Prompts / Prompt Templates / Prompt Selectors
[ ] Output Parsers
[X] Document Loaders
[ ] Vector Stores / Retrievers
[ ] Memory
[ ] Agents / Agent Executors
[ ] Tools / Toolkits
[ ] Chains
[ ] Callbacks/Tracing
[ ] Async

Reproduction

from langchain_community.document_loaders import UnstructuredRSTLoader
loader = UnstructuredRSTLoader("example.rst", mode="elements", strategy="fast")
docs = loader.load()

In this case, "example.rst" is the downloaded rst from the lanchain source itself.

Expected behavior

I would expect the document loader to result in a list of documents. Instead there is an error in referencing a module:

  File ".../virtualenvs/qa-oj4cEcx_-py3.11/lib/python3.11/site-packages/langchain_community/document_loaders/unstructured.py", line 14, in satisfies_min_unstructured_version
    from unstructured.__version__ import __version__ as __unstructured_version__
ModuleNotFoundError: No module named 'unstructured'

dosubot[bot] commented 10 months ago

🤖

Hello @maxscott! I'm Dosu, an AI here to help with your issues, answer any questions, and guide you on how to contribute to our repository. Consider me your friendly digital assistant while we wait for a human maintainer to join in. Don't hesitate to ask if you need anything!

Based on the information you've provided, it seems like the Python interpreter is unable to find the 'unstructured' module in your environment. This could be due to a couple of reasons:

The 'unstructured' module is not installed in your Python environment. You can install it using pip by running the command pip install unstructured.
The 'unstructured' module is installed, but it's not in the Python path. Python uses the PYTHONPATH environment variable to determine which directories to search for modules during import. If the 'unstructured' module is installed in a directory that's not in the PYTHONPATH, Python won't be able to find it.

The code that is causing this error is in the UnstructuredBaseLoader class:

try:
    import unstructured  # noqa:F401
except ImportError:
    raise ValueError(
        "unstructured package not found, please install it with "
        "`pip install unstructured`"
    )

This code tries to import the 'unstructured' module and raises a ValueError with a helpful message if the import fails. If you're seeing a ModuleNotFoundError instead of this ValueError, it's possible that there's another import statement for 'unstructured' elsewhere in your code that's causing the error.

You can find this code in the unstructured.py file in the LangChain repository.

Additionally, there was a similar issue reported in the LangChain repository: Can't import UnstructuredRSTLoader. The solution suggested there was to change the import statement from 'from langchain.schema import Document' to 'from langchain.docstore.document import Document'. However, this seems to be a different issue than the one you're experiencing.

Please try installing the 'unstructured' module and ensuring it's in your Python path, and let me know if this resolves your issue. If not, could you provide more information about your environment and the exact steps you're taking when you encounter this error? This will help me better understand the problem and find a solution.

Sources

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.

keenborder786 commented 10 months ago

Make to sure to run the following two commands:

pip install "unstructured[all-docs]"
pip install pypandoc_binary

keenborder786 commented 10 months ago

Hopefully this will resolve your error.

maxscott commented 10 months ago

Aha, I didn't realize "unstructured" was a 3p lib—I thought it was just a broken reference in the project or something. Thank you!

langchain-ai / langchain