Pip install langchain By ensuring your system meets the prerequisites and following the step-by-step instructions, you can quickly set up LangChain and start exploring its powerful capabilities. To use IBM's models, you must have an IBM Cloud user API key. Is there anything specific about LangChain you'd like to know more about, Bob? {'cache_read': 0, 'cache_creation': 1498} The LangChain Ollama integration lives in the langchain-ollama package: % pip install - qU langchain - ollama Make sure you're using the latest Ollama version for structured outputs. Once we have a key we'll want to set it as an environment variable by running: Sep 18, 2024 · pip install --upgrade langchain Permissions Issues : If you face permission-denied errors during installation, consider running the command with elevated privileges (on Windows) or using sudo (on Installation via Pip. See a usage example. . pip install -qU langchain-openai. This package contains the LangChain integrations for OpenAI through their openai SDK. To access AzureOpenAI models you'll need to create an Azure account, create a deployment of an Azure OpenAI model, get the name and endpoint for your deployment, get an Azure OpenAI API key, and install the langchain-openai integration package. All the methods might be called using their async counterparts, with the prefix a , meaning async . 1, 则无法将 langchain 升级到0. You can see their recommended models here. Released: Mar 7, 2025 CLI for interacting with LangChain. 1. 这是安装 LangChain 的最低要求。这里我要提醒你一点，LangChain 要与各种模型、数据存储库集成，比如说最重要的OpenAI的API接口，比如说开源大模型库HuggingFace Hub，再比如说对各种向量数据库的支持。 Familiarize yourself with LangChain's open-source components by building simple applications. This package provides the integration between LangChain and IBM watsonx. Quick Install pip install langchain-core What is it? LangChain Core contains the base abstractions that power the rest of the LangChain ecosystem. Document Loader Apr 17, 2025 · langchain-openai. retrievers import GoogleDriveRetriever Feb 7, 2025 · 考虑到可能存在依赖项不匹配的情况，建议先更新pip至最新版： ```bash python -m pip install --upgrade pip ``` 接着再试着重启虚拟环境（如果有使用的话），之后重新运行安装命令: ```bash pip install langchain-chroma ``` 如果上述方法仍未能成功，则可能是由于网络原因导致 Setup . LangChain Experimental. 对于研究目的的实验性代码，您可以安装LangChain Experimental包： pip install langchain-experimental 安装这些额外包可以帮助您更好地利用LangChain的功能并 LangChain CLI는 LangChain템플릿과 다른 LangServe프로젝트를 조작할 때 유용하다. Note: you may need to restart the kernel to use updated packages. Request an API key and set it as an environment variable: To use AAD in Python with LangChain, install the azure-identity package. 22 Make sure to check the version after installation to confirm: langchain-cli --version Installation via Conda Tool calling . Learn how to install the main langchain package and its dependencies for various integrations, such as OpenAI, Anthropic, and LangGraph. The LangChain CLI is useful for working with LangChain templates and other LangServe projects. LangChain CLI 对于处理 LangChain 模板和其他 LangServe 项目非常有用。使用以下命令安装 This example goes over how to use LangChain to interact with xAI models. It provides a high-level API that makes it easy to chain together multiple LLMs, as well as other data sources and tools, to create complex applications. 0以及以上。 langchain 从0. See the dependency graph and the installation commands for each package. Feb 21, 2025 · pip install-U langchain-redis This will install the package along with its dependencies, including redis, redisvl, and ulid. Source Distribution pip install google-api-python-client google-auth-httplib2 google-auth-oauthlib langchain-googledrive See a usage example and authorization instructions . Download and install Ollama onto the available supported platforms (including Windows Subsystem for Linux) Fetch available LLM model via ollama pull <name-of-model> View a list of available models via the model library Nov 5, 2024 · pip install langchain-qdrant Copy PIP instructions. Installation pip install-U langchain-aws . Chat Models. output_parsers import StrOutputParser from langchain_core. 0版本开始, 只支持python 3. These abstractions are designed to be as modular and simple as possible. vectorstores import DocArrayInMemorySearch from langchain_core. Jun 4, 2024 · pip install -e . Install the LangChain partner package; pip install langchain-openai Get an OpenAI api key and set it as an environment variable (OPENAI_API_KEY) Chat model. Integrate Atlas Vector Search with LangChain for a walkthrough on using your first LangChain implementation with MongoDB Atlas. Credentials To use Google Generative AI models, you must have an API key. from langchain_core. import getpass import os Mar 3, 2025 · 🦜️🔗 LangChain Neo4j. 用于客户端和服务器依赖项。或者pip install "langserve[client]"用于客户端代码，和pip install "langserve[server]"用于服务器代码。 LangChain CLI . And you should configure credentials by setting the following environment variables: pip install langchain-cohere Accessing the API requires an API key, which you can get by creating an account and heading here . To access Chroma vector stores you'll need to install the langchain-chroma integration package. Qdrant is a vector store, which supports all the async operations, thus it will be used in this walkthrough. 0. Install All Dependencies pip install langchain[all] 如果您需要LangChain的基本抽象和LangChain表达语言，可以安装LangChain Core包： pip install langchain-core 3. Apr 17, 2025 · pip install -U langchain-anthropic. runnables import RunnableParallel, RunnablePassthrough from langchain_openai import OpenAIEmbeddings The types of messages currently supported in LangChain are AIMessage, HumanMessage, SystemMessage, FunctionMessage and ChatMessage-- ChatMessage takes in an arbitrary role parameter. If you're not sure which to choose, learn more about installing packages. Follow the step-by-step guide with PyCharm, pip, and GitHub options. env file like so: Jul 16, 2024 · Installing LangChain using pip is a straightforward process that even beginners can follow with ease. 这将安装LangChain的最小要求。 LangChain的很多价值在于将其与各种模型提供程序、数据存储等集成。 默认情况 Apr 16, 2025 · pip install langchain-mcp-adapters Copy PIP instructions. Installation and Setup. Installation. Install langchain_community and pypdf. 📦 Installation pip install-U langchain-neo4j 💻 Examples Neo4jGraph. Here's how to obtain and set up your pip install langchain-aws And there are also some community integrations available in the langchain_community package with the boto3 optional dependency. Follow the steps to create a basic text generation chain and explore more features and integrations. pip install langchain-community boto3 Mar 7, 2025 · pip install langchain-cli Copy PIP instructions. Most of the time, you'll just be dealing with HumanMessage , AIMessage , and SystemMessage Apr 7, 2025 · pip install-U langchain-postgres Change Log. 1 以及以上的版本。 % pip install --upgrade --quiet langchain langchain-community langchainhub langchain-openai langchain-chroma bs4 We need to set environment variable OPENAI_API_KEY for the embeddings model, which can be done directly or loaded from a . from langchain_googledrive . OpenAI has a tool calling (we use "tool calling" and "function calling" interchangeably here) API that lets you describe tools and their arguments, and have the model return a JSON object with a tool to invoke and the inputs to that tool. Next, use the DefaultAzureCredential class to get a token from AAD by calling get_token as shown below. LangChain CLI对于使用LangChain模板和其他LangServe项目非常有用。 使用以下命令安装： Oct 14, 2024 · conda install langchain -c conda-forge 安装LangChain的基础包后，可以通过集成其他模型提供商和数据存储来利用LangChain的完整功能。这些集成的依赖关系默认情况下不会安装，需要单独安装。 2. environ["LANGSMITH_TRACING"] = "true" Dec 27, 2023 · Install with LLM Dependencies pip install langchain[llms] By adding the [llms] extra, pip will install additional packages needed to work with large language models like GPT-3, Codex, and others. vectorstores import InMemoryVectorStore vector_store = InMemoryVectorStore (embeddings) Preview Install langchain_community and pymupdf. 3. langchain-core 包含 LangChain 生态系统的基本抽象，以及 LangChain 表达语言。它会被 langchain 自动安装，但也可以单独使用。安装方法： pip install langchain-core; LangChain 社区. The LangChain Groq integration lives in the langchain-groq package: % pip install -qU langchain-groq. Installation % pip install --upgrade langchain-xai. 01 はじめに 02 プロンプトエンジニアとは？ 03 プロンプトエンジニアの必須スキル5選 04 プロンプトデザイン入門【質問テクニック10選】 05 LangChainの概要と使い方 06 LangChainのインストール方法【Python】 07 LangChainのインストール方法【JavaScript・TypeScript】 08 LCEL（LangChain Expression Language）の概要と 同时安装客户端和服务器依赖。或者使用 pip install "langserve[client]" 安装客户端代码，使用 pip install "langserve[server]" 安装服务器代码。 LangChain CLI. This allows full integration with LLMs. Feb 25, 2025 · pip install-U langchain-azure-ai For using tracing capabilities with OpenTelemetry, you need to add the extras opentelemetry: pip install-U langchain-azure-ai pip install openai 访问API需要一个API密钥，你可以通过创建一个帐户并前往 这里 来获取。 当我们获得了一个密钥之后，我们需要通过运行以下命令将其设置为环境变量： pip install -qU langchain-community faiss-cpu If you want to get best in-class automated tracing of your model calls you can also set your LangSmith API key by uncommenting below: # os. pip: pip install langchain-docling. Apr 1, 2025 · langchain-ibm. Released: Nov 5, 2024 An integration package connecting Qdrant and LangChain. 生态系统包. LangChain CLI对于使用LangChain模板和其他LangServe项目非常有用。 使用以下命令安装： Dec 21, 2024 · 使用 pip 命令进行升级： pip install --upgrade langchain; 执行安装指令，等待完成即可。安装完成后再次执行原来的代码即可。 如果你的 python 版本小于 3. This package contains the LangChain integrations with AWS. Chat models and prompts: Build a simple LLM application with prompt templates and chat models. Navigation. Install the langchain-groq package if not already installed: pip install langchain-groq. Base interface for checkpointer changed To access Google Generative AI embedding models you'll need to create a Google Cloud project, enable the Generative Language API, get an API key, and install the langchain-google-genai integration package. If not using LangChain, install with: Sep 18, 2024 · Install LangChain using the following pip command: pip install langchain; To verify that LangChain has been installed correctly, run: pip show langchain Nov 16, 2023 · Learn how to install and configure LangChain, an open-source Python framework for working with large language models like GPT-3 and Codex. langchain-experimental 包包含实验性的 LangChain 代码，用于研究和实验用途。 用于客户端和服务器依赖项。或者 pip install "langserve[client]" 用于客户端代码，pip install "langserve[server]" 用于服务器代码。 LangChain CLI . The Neo4jGraph class is a wrapper around Neo4j's Python driver. Finally, set the OPENAI_API_KEY environment variable to the token value. To develop the langchain-groq package, you'll need to follow these instructions: Install dev dependencies poetry install--with test,test_integration Nov 20, 2023 · 🦜🍎️ LangChain Core. from langchain_openai import ChatOpenAI Mar 31, 2025 · Install the integration package: pip install langchain-groq Request an API key and set it as an environment variable. $ pip install langchain-cli 또한 LangChain CLI에 포함된 다음 라이버리를 개별적으로 설치하는 방법은 아래와 같다. To install the main LangChain package using Pip, execute the following command: pip install langchain If you need to install a specific version of LangChain, you can specify it like this: pip install langchain==0. g. LangChain CLI对于处理LangChain模板和其他LangServe项目非常有用。 安装方法如下： Nov 8, 2024 · LangChain的基本安装特别简单。 pip install langchain. Environment LangChain supports async operation on vector stores. Project description Apr 16, 2025 · langchain-mongodb Installation pip install -U langchain-mongodb Usage. Download the file for your platform. 6: Remove langgraph as a dependency as it was causing dependency conflicts. If you're looking to get started with chat models, vector stores, or other LangChain components from a specific provider, check out our supported integrations. langchain-community 包含第三方集成。安装方法： pip install langchain-community 同时安装客户端和服务器依赖。或者使用 pip install "langserve[client]" 安装客户端代码，使用 pip install "langserve[server]" 安装服务器代码。 LangChain CLI. LangChain is an open-source framework for developing applications powered by large language models (LLMs). # pip install langchain docarray tiktoken from langchain_community. Anthropic recommends using their chat models over text completions. % pip install -qU langchain_community pymupdf. 8. You can create one in Google AI Studio. Install with: The LangSmith SDK is automatically installed by LangChain. Then, set OPENAI_API_TYPE to azure_ad. The README also mentions installation instructions (`pip install -U langchain`) and links to various resources including tutorials, how-to guides, conceptual guides, and API references. Released: Mar 1, 2025 Make Anthropic Model Context Protocol (MCP) tools compatible with Sep 19, 2024 · pip install langchain-community==0. Aug 24, 2024 · 1 2 bash pip install langchain-openai Step 3: Install LangChain from Source (Optional) If you prefer to work with the latest and greatest version directly from the repository, you can install LangChain from source. 1; Verify the Installation: Once the installation completes, you can verify that langchain-community has been installed correctly by running: pip install -qU langchain-core. Installation pip install-U langchain-deepseek . Download files. prompts import ChatPromptTemplate from langchain_core. Learn how to install, use, and contribute to langchain with documentation, examples, and resources. tool-calling is extremely useful for building tool-using chains and agents, and for getting structured outputs from models more generally. This package contains the LangChain integration with the DeepSeek API. Using MongoDBAtlasVectorSearch Sep 6, 2023 · Introduction. 这将安装LangChain的基本最低要求。 LangChain的很多价值在于将其与各种模型提供商，数据存储等集成。 默认情况下，执行这些操作所需的依赖项并未安装。 Apr 25, 2025 · langchain-aws. pip install langchain. Apr 22, 2025 · langchain is a Python library that helps you create applications with large language models (LLMs) by composing them with other components. Aug 15, 2023 · The LangChain Hub API client. 0. Development. Or pip install "langserve[client]" for client code, and pip install "langserve[server]" for server code. Learn how to install LangChain, a library for building AI applications with language models, and configure API keys and external services. This package contains the LangChain integration with Neo4j. LangChain 核心. To use the langchain-ibm package, follow these installation steps: pip install langchain-ibm Usage Setting up. ai through the ibm-watsonx-ai SDK. Configuration. Simply install langchain-docling from your package manager, e. export GROQ_API_KEY = gsk_ Chat Model. Latest version. LangChain生态系统中的包大多依赖于langchain-core，它包含了其他包 安装特定集成包，例如安装 langchain-openai ：pip install langchain-openai; 任何没有被分离成自己包的集成将存在于 langchain-community 包中。安装：pip install langchain-community （四）实验性包. Sep 6, 2023 · Learn how to install LangChain using Pip, Conda, or from source, and how to create and execute a chain with OpenAI's model APIs. % pip install -qU langchain_community pypdf. All integrations in this package assume that you have the credentials setup to connect with AWS services. Mar 21, 2025 · langchain-deepseek. onjnf ijbmy saehs kosoiq soge jnkg seudhuf ccikvf ccll ryeahk otikqc fomg zch fzhm kcxigftx