langchain.samples

You could run sample with uv package

uv run langchain_to_dbpedia_movies.py

OR

Install next packages before execute

$ pip install langchain-openai
$ pip install langchain
$ pip install rdflib

Install patched version of langchain_community package:

$ pip install git+https://github.com/OpenLinkSoftware/langchain-community.git#subdirectory=libs/community