langchain/docs/reference/installation.md
Harrison Chase 985496f4be
Docs refactor (#480)
Big docs refactor! Motivation is to make it easier for people to find
resources they are looking for. To accomplish this, there are now three
main sections:

- Getting Started: steps for getting started, walking through most core
functionality
- Modules: these are different modules of functionality that langchain
provides. Each part here has a "getting started", "how to", "key
concepts" and "reference" section (except in a few select cases where it
didnt easily fit).
- Use Cases: this is to separate use cases (like summarization, question
answering, evaluation, etc) from the modules, and provide a different
entry point to the code base.

There is also a full reference section, as well as extra resources
(glossary, gallery, etc)

Co-authored-by: Shreya Rajpal <ShreyaR@users.noreply.github.com>
2023-01-02 08:24:09 -08:00

964 B

Installation

Official Releases

LangChain is available on PyPi, so to it is easily installable with:

pip install langchain

That will install the bare minimum requirements of LangChain. A lot of the value of LangChain comes when integrating it with various model providers, datastores, etc. By default, the dependencies needed to do that are NOT installed. However, there are two other ways to install LangChain that do bring in those dependencies.

To install modules needed for the common LLM providers, run:

pip install langchain[llms]

To install all modules needed for all integrations, run:

pip install langchain[all]

Note that if you are using zsh, you'll need to quote square brackets when passing them as an argument to a command, for example:

pip install 'langchain[all]'

Installing from source

If you want to install from source, you can do so by cloning the repo and running:

pip install -e .