langchain/MIGRATE.md

Migrating to langchain.experimental

We are moving any experimental components of langchain, or components with vulnerability issues, into langchain_experimental. This guide covers how to migrate.

Installation

Previously:

pip install -U langchain

Now:

pip install -U langchain langchain_experimental

PALChain

Previously:

from langchain.chains import PALChain

Now:

from langchain_experimental.pal_chain import PALChain

SQLDatabaseChain

Previously:

from langchain.chains import SQLDatabaseChain

Now:

from langchain_experimental.sql import SQLDatabaseChain

load_prompt for Python files

Note: this only applies if you want to load Python files as prompts. If you want to load json/yaml files, no change is needed.

Previously:

from langchain.prompts import load_prompt

Now:

from langchain_experimental.prompts import load_prompt