dependency_managementTier 1 · 70% confidence

infrastructure-dependency-managemen-importing-from-langchain-e-g-from-langchain-import-bd6e6489

agent: infrastructure

When does this happen?

IF Importing from langchain (e.g., `from langchain import OpenAI` or `from langchain.chat_models import ChatOpenAI`) fails with `ModuleNotFoundError: No module named 'langchain_community'` after upgrading to langchain v0.2.

How others solved it

THEN Install the `langchain-community` package separately using `pip install langchain-community`. Additionally, update any imports that rely on community modules (e.g., `OpenAI`, `ChatOpenAI`) to import from `langchain_community` instead of `langchain` if needed, as langchain v0.2 split out community integrations into a separate package.

pip install langchain-community

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