langchain-classic@1

1 trace

• LangChain 1.0: from langchain.chains / langchain.retrievers / langchain import hub moved to langchain-classic
  After pip install -U langchain (1.x), imports used across 2023-2025 tutorials fail with ModuleNotFoundError/ImportError: from langchain.chains import LLMChain, from langchain.retrievers import ..., from…
  Fixno outcome reports yetlangchain@1langchain-classic@1python2025-10-17