Pip install langchain To use the langchain-ibm package, follow these installation steps: pip install langchain-ibm Usage Setting up. Document Loader Mar 31, 2025 · Install the integration package: pip install langchain-groq Request an API key and set it as an environment variable. 0 Summary: An integration package connecting Groq and LangChain Home-page: https: // github. It provides a production-ready service with a convenient API to store, search, and manage vectors with additional payload and extended filtering support. 下面是一个完整的示例代码，展示了如何使用 LangChain 调用本地的 DeepSeek API： Jan 28, 2025 · 这通常涉及 `langchain` 及其相关扩展模块以及用于 HTTP 请求的工具如 `requests`。 ```bash pip install langchain requests ``` #### 初始化 LangChain 并设置 DeepSeek API 参数 创建一个新的 LangChain 实例之前，要定义访问 DeepSeek 所必需的服务端点 URL 和认证令牌等参数。这些信息可以 MistralAI. Released: Nov 5, 2024 An integration package connecting Qdrant and LangChain. Download the file for your platform. Installation and Setup. 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. tool-calling is extremely useful for building tool-using chains and agents, and for getting structured outputs from models more generally. LangChain is an open-source framework for developing applications powered by large language models (LLMs). Oct 25, 2022 · langchain is a Python library that helps you create applications with large language models (LLMs) by composing them with other components. Released: Mar 7, 2025 CLI for interacting with LangChain. 📕 Releases & Versioning. Overview LangChain Milvus provides seamless integration between LangChain, a framework for building applications with large language models (LLMs), and Milvus, a powerful vector database designed for similarity To access DeepSeek models you'll need to create a/an DeepSeek account, get an API key, and install the langchain-deepseek integration package. LangChain 기초 1-1. Install with: The LangSmith SDK is automatically installed by LangChain. Installation pip install-U langchain-unstructured . conda install langchain -c conda-forge For those looking to add Jupyter Notebook examples, it is recommended to install the optional dev dependencies. Qdrant (read: quadrant) is a vector similarity search engine. LangChain を使用する手順は以下の通りです。 インストール; 環境設定; LLM を利用したアプリケーションの実装; 本文書では、まず、LangChain のインストール方法と環境設定の方法を説明します。 % pip install -qU duckduckgo-search langchain-community. Amazon Bedrock is a fully managed service that offers a choice of high-performing foundation models (FMs) from leading AI companies like AI21 Labs, Anthropic, Cohere, Meta, Stability AI, and Amazon via a single API, along with a broad set of capabilities you need to build generative AI applications with security, privacy Sep 26, 2023 · Dear all, I'm using Mac, and trying to install langchain[all], but keep seeing below error, highly appreciatd if anyone can shed some light. To get started with LangChain and Weaviate, you need to install the necessary Python SDK. It allows deep-learning engineers to efficiently process, embed, search, recommend, store, and transfer multimodal data with a Pythonic API. 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. 1 一个问题，并得到了输出答案，如果你能看到输出结果，那么恭喜你，LangChain已经可以在你的电脑正常运行了，而且你已经学会了如何用它去创建一个基于大模型的应用，当然你可以继续深入学习LangChain，实现更多更复杂的功能，比如可以创建一个前端页面，用 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. Note: you may need to restart the kernel to use updated packages. Run the installation command: Execute the following command to install LangChain: pip install langchain As of the v0. For full documentation see the API reference. Project description % pip install -qU langchain-openai Should you need to specify your organization ID, you can use the following cell. 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. 📦 Installation pip install-U langchain-neo4j 💻 Examples Neo4jGraph. Released: Apr 3, 2024. hugging_face_dataset import HuggingFaceDatasetLoader API Reference: HuggingFaceDatasetLoader Hugging Face model loader Apr 2, 2025 · %pip install --upgrade databricks-langchain langchain-community langchain databricks-sql-connector; Use Databricks served models as LLMs or embeddings If you have an LLM or embeddings model served using Databricks Model Serving, you can use it directly within LangChain in the place of OpenAI, HuggingFace, or any other LLM provider. All integrations in this package assume that you have the credentials setup to connect with AWS services. You can see their recommended models here. 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. Feb 6, 2025 · Step 1: Install LangChain. pip install google-api-python-client google-auth-httplib2 google-auth-oauthlib langchain-googledrive See a usage example and authorization instructions . Install the Python SDK with pip install unstructured. Most of the time, you'll just be dealing with HumanMessage , AIMessage , and SystemMessage To use AAD in Python with LangChain, install the azure-identity package. LangChain works with various Large Language Models (LLMs), and for this example, we'll be using OpenAI. LLMs Bedrock . 1; Verify the Installation: Once the installation completes, you can verify that langchain-community has been installed correctly by running: # pip install langchain docarray tiktoken from langchain_community. prebuilt import create_react_agent def search (query: str): """Call to surf the web. LangChain agents (the AgentExecutor in particular) have multiple configuration parameters. Future updates and new features will be released exclusively in databricks-langchain. 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 用于客户端和服务器依赖项。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 . 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. """ if "sf" in query. Install All Dependencies pip install langchain[all] Mar 21, 2025 · langchain-deepseek. 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. Here are the commands for both: pip install langchain or. To access Groq models you'll need to create a Groq account, get an API key, and install the langchain-groq integration package. document_loaders' after running pip install 'langchain[all]', which appears to be installing langchain-0. Apr 8, 2025 · langchain-pinecone. Sep 17, 2024 · pip (Python package manager) Git (version control system) Step 1: Install Langchain. Released: Jan 8, 2025 Docling LangChain integration. This example goes over how to use LangChain to interact with xAI models. 📕 Releases & Versioning To install LangChain, you can use the Python package manager, Pip. And you should configure credentials by setting the following environment variables: Oct 21, 2024 · LangChain Core: 提供基础抽象和LangChain表达式语言。 pip install langchain-core LangChain Community: 包含第三方集成。 pip install langchain-community LangChain Experimental: 包含实验性代码。 pip install langchain-experimental LangGraph: 用于构建有状态、多角色应用。 pip install langgraph Nov 5, 2024 · langchain-nomic. See the dependency graph and the installation commands for each package. Once you've done this set the GROQ_API_KEY environment variable: Install langchain_community and pymupdf. 랭체인(LangChain) 입문부터 응용까지 Part 0. Apr 9, 2023 · pip install faiss-cpu from langchain. Credentials Head to DeepSeek's API Key page to sign up to DeepSeek and generate an API key. To get started: Create a free account with NVIDIA, which hosts NVIDIA AI Foundation models. 1 以及以上的版本。 Install langchain_community and pypdf. 39. The LangChain integrations related to Amazon AWS platform. For full documentation see the API reference and the Text Splitters module in the main docs. For Vertex AI Workbench you can restart the terminal using the button on top. ai through the ibm-watsonx-ai SDK. Under Input select the Python tab, and click Get API Key. 0以及以上。 langchain 从0. To install OpenAI, run the following:!pip install openai. It makes it useful for all sorts of neural network or semantic-based matching, faceted search, and other applications. And you should configure credentials by setting the following environment variables: Jun 5, 2024 · Download files. Installation pip install-U langchain-pinecone . Installation and Setup If you are using a loader that runs locally, use the following steps to get unstructured and its dependencies running locally. Still, this is a great way to get started with LangChain - a lot of features can be built with just some prompting and an LLM call! pip install -qU langchain-core. Below are the steps to install LangChain using Pip, along with additional information on how to set it up in Visual Studio Code. This is often the best starting point for individual developers. Step 3: Install Python-dotenv Install this module easily using pip: `python pip install langchain-nvidia-ai-endpoints ` ## Utilizing Chat Models: After setting up the environment, interact with NVIDIA AI Foundation models: `` ` python from langchain_nvidia_ai_endpoints import ChatNVIDIA The LangChain Nomic integration lives in the langchain-nomic package: % pip install - qU langchain - nomic Note: you may need to restart the kernel to use updated packages. How to Migrate. Follow the steps to create a basic text generation chain and explore more features and integrations. This allows full integration with LLMs. This package contains the LangChain integrations for OpenAI through their openai SDK. from langchain_community. similarity_search ( query ) % pip install --upgrade --quiet langchain-unstructured unstructured-client unstructured "unstructured[pdf]" python-magic Installation for Local If you would like to run the partitioning logic locally, you will need to install a combination of system dependencies, as outlined in the Unstructured documentation here . LangChain Experimental. 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 install langchain-community boto3 Installation via Pip. Next, use the DefaultAzureCredential class to get a token from AAD by calling get_token as shown below. 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 Aug 11, 2024 · The LangChain Hub API client. 1, 则无法将 langchain 升级到0. If your code is already relying on RunnableWithMessageHistory or BaseChatMessageHistory, you do not need to make any changes. vectorstores import InMemoryVectorStore vector_store = InMemoryVectorStore (embeddings) Preview Dec 20, 2024 · pip install langchain-experimental Copy PIP instructions. This can be done easily using pip. 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 . pip install langchain. embeddings import HuggingFaceBgeEmbeddings model_name = "BAAI/bge-small-en" pip install langchain-docling Copy PIP instructions. The easiest way to start one is through Elastic Feb 4, 2025 · pip install langchain-deepseek-official Copy PIP instructions. 0. Quick Install pip install langchain-text-splitters What is it? LangChain Text Splitters contains utilities for splitting into chunks a wide variety of text documents. 22 Make sure to check the version after installation to confirm: langchain-cli --version Installation via Conda Tool calling . Released: Feb 4, 2025 An integration package connecting DeepSeek and LangChain. 生态系统包. 環境設定 (Environment Setup) LangChainを使用する場合、通常は1つ以上のモデルプロバイダ、データストア、API Nov 9, 2024 · 在终端或命令提示符中输入以下命令： ``` npm install -g langchain-cli ``` 这将下载并安装Langchain的命令行工具。 4. 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。 May 2, 2025 · langchain-openai. 3. 3 release of LangChain, we recommend that LangChain users take advantage of LangGraph persistence to incorporate memory into new LangChain applications. 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： 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 . env file like so: Jul 16, 2024 · Installing LangChain using pip is a straightforward process that even beginners can follow with ease. Once you've done this set the DEEPSEEK_API_KEY environment variable: Install the langchain-groq package if not already installed: pip install langchain-groq. Request an API key and set it as an environment variable: 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. /pip3 --version p. 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. This method is straightforward and widely used among developers. from langchain_googledrive . Is there anything specific about LangChain you'd like to know more about, Bob? {'cache_read': 0, 'cache_creation': 1498} DocArray. from langchain_openai import ChatOpenAI 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. Learn how to install the main langchain package and its dependencies for various integrations, such as OpenAI, Anthropic, and LangGraph. 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. environ["LANGSMITH_TRACING"] = "true" Mar 13, 2025 · 打开Terminal，直接使用pip安装即可 (venv) PS E: \ Workspace \ pycharm \ langchain > pip install langchain 安装后点一下这个按钮，刷新下packages，不然会提示找不到langchain; 初次使用(deepseek) 安装deepseek api包. pip install langchain-community boto3 Invocation Invoke directly with args . Installation pip install-U langchain-aws . Credentials To use Google Generative AI models, you must have an API key. 11. This application will translate text from English into another language. Head to the API reference for detailed documentation of all attributes and methods. Specifically, gradio-tools is a Python library for converting Gradio apps into tools that can be leveraged by a large language model (LLM)-based agent to complete its task. " Feb 12, 2023 · pipコマンドを使う場合、常に以下のコマンドを実行しておきましょう。 python -m pip install --upgrade pip setuptools では、LangChainのインストールです。 LangChainのインストールは、以下のコマンドとなります。 pip install langchain これだけだと最低限のインストールです。 LangChain supports async operation on vector stores. Apr 28, 2025 · Quick Install pip install langchain-community What is it? LangChain Community contains third-party integrations that implement the base interfaces defined in LangChain Core, making them ready-to-use in any LangChain application. This package contains the LangChain integrations with AWS. Nov 22, 2024 · langchain-unstructured. Released: Mar 1, 2025 Make Anthropic Model Context Protocol (MCP) tools compatible with 1 day ago · pip install-U langchain-redis This will install the package along with its dependencies, including redis, redisvl, and ulid. 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. Finally, set the OPENAI_API_KEY environment variable to the token value. The langchain-google-genai package provides the LangChain integration for these models. LangChain 이란? 1-1-1. 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. In this guide, we will go over the basic ways to create Chains and Agents that call Tools. 安装完成后，你可以使用以下命令来验证是否成功安装了Langchain： ``` langchain--version ``` 如果显示了Langchain的版本号，则说明安装成功。 Jan 20, 2025 · pip install-U langchain-elasticsearch Elasticsearch setup Elastic Cloud. Chat models and prompts: Build a simple LLM application with prompt templates and chat models. Step 2: Install OpenAI. Integrate Atlas Vector Search with LangChain for a walkthrough on using your first LangChain implementation with MongoDB Atlas. output_parsers import StrOutputParser from langchain_core. To install LangChain, use the following command:!pip install langchain. This package contains the LangChain integration with Neo4j. (base) TonydeMacBook-Pro:bin leining$ . The key to using models with tools is correctly prompting a model and parsing its response so that it chooses the right tools and provides the Apr 1, 2023 · I am using Python 3. To install LangChain, you can use either pip or conda. % pip install -upgrade --quiet langchain-google-firestore langchain-google-vertexai Colab only : Uncomment the following cell to restart the kernel or use the button to restart the kernel. 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： Simply install langchain-docling from your package manager, e. langchain-experimental 包包含实验性的 LangChain 代码，用于研究和实验用途。 Oct 9, 2023 · 使用以下命令安装langchain: pip install langchain; 选择所需的语言模型SDK进行安装，如OpenAI和Azure OpenAI: pip install openai; Q: 怎么解决pip安装报错的问题？ A: 确保pip的版本是最新的，可使用命令 python -m pip install --upgrade pip 来升级。 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. You need a running Elasticsearch deployment. Apr 25, 2025 · langchain-milvus - A powerful integration between LangChain and Milvus, enabling vector search and retrievers for AI applications. This can be done with the following command: Sep 19, 2024 · pip install langchain-community==0. Feb 26, 2025 · langchain-google-community. To install LangChain, you can use the Python package manager, Pip. lower or "san francisco" in query. This package contains the LangChain integration with Unstructured. And you should configure credentials by setting the following environment variables: pip install langchain あと注意が必要なのは、 原則的にOpenAIのAPI Keyが必要 になることです。 OpenAIにログインして、画面右上のPersonalメニューから"View API keys"を選択するとkeyの一覧と新規keyの追加ができる画面に遷移します。 Access Google's Generative AI models, including the Gemini family, directly via the Gemini API or experiment rapidly using Google AI Studio. Using MongoDBAtlasVectorSearch Apr 17, 2025 · pip install -U langchain-anthropic. Latest version. In your terminal, run the following command to install Langflow: pip install langflow Step 3: Verify Installation Install the Python SDK with pip install neo4j langchain-neo4j VectorStore The Neo4j vector index is used as a vectorstore, whether for semantic search or example selection. To develop the langchain-groq package, you'll need to follow these instructions: Install dev dependencies poetry install--with test,test_integration Apr 5, 2024 · langchain-aws. pip install -qU langchain-openai. You can create one in Google AI Studio. Project description 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. document_loaders. Installation pip install-U langchain-google-community pip install langchain-aws And there are also some community integrations available in the langchain_community package with the boto3 optional dependency. Source Distribution pip install langchain-qianwen Copy PIP instructions. LangChain 核心. 6: Remove langgraph as a dependency as it was causing dependency conflicts. prompts import ChatPromptTemplate, MessagesPlaceholder from langchain_openai import To use Anthropic models, you need to install a python package: pip install -U langchain-anthropic. Download files. Project description Installation with Windows . txt'). 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 pip install langchain-aws And there are also some community integrations available in the langchain_community package with the boto3 optional dependency. 글쓴이 소개 Part 1. % pip install -qU langchain_community pypdf. This notebook covers how to get started with MistralAI chat models, via their API. % pip install -qU langchain_community pymupdf. % pip install --upgrade --quiet sentence_transformers. Then, set OPENAI_API_TYPE to azure_ad. The Tavily search tool accepts the following arguments during invocation: query (required): A natural language search query; The following arguments can also be set during invocation : include_images, search_depth, time_range, include_domains, exclude_domains, include_images In this quickstart we'll show you how to build a simple LLM application with LangChain. 通义千问 Qianwen Langchain adapter. Use the LangChain CLI to bootstrap a LangServe project quickly. 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 LangChain を Python で使う 概要 . Here's how to obtain and set up your This page covers how to use the unstructured ecosystem within LangChain. LangChain CLI 对于处理 LangChain 模板和其他 LangServe 项目非常有用。 安装方式： Jun 4, 2024 · pip install -e . retrievers import GoogleDriveRetriever Mar 7, 2025 · pip install langchain-cli Copy PIP instructions. To use, you should have Google Cloud project The types of messages currently supported in LangChain are AIMessage, HumanMessage, SystemMessage, FunctionMessage and ChatMessage-- ChatMessage takes in an arbitrary role parameter. vectorstores import FAISS db = FAISS . These abstractions are designed to be as modular and simple as possible. All the methods might be called using their async counterparts, with the prefix a , meaning async . Quick Install pip install langchain-core What is it? LangChain Core contains the base abstractions that power the rest of the LangChain ecosystem. You can follow most of the instructions in the repository itself but there are some windows specific instructions which might be useful. 0 출시 의미 1-1-2. Apr 4, 2025 · 🦜 ️ LangChain Text Splitters. lower (): return "It's 60 degrees and foggy. $ pip install langchain-cli 또한 LangChain CLI에 포함된 다음 라이버리를 개별적으로 설치하는 방법은 아래와 같다. Tools allow us to extend the capabilities of a model beyond just outputting text/messages. 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 . Follow the step-by-step guide with PyCharm, pip, and GitHub options. 8. 308 and suddenly my To access AzureOpenAI embedding models you'll need to create an Azure account, get an API key, and install the langchain-openai integration package. Chat Models. Open your terminal and run the following command: pip install langchain-weaviate Once the installation is complete, you can begin utilizing the Weaviate vector store. ChatVertexAI class exposes models such as gemini-pro and chat-bison. Jun 14, 2024 · 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. runnables import RunnableParallel, RunnablePassthrough from langchain_openai import OpenAIEmbeddings 5 days ago · pip install langchain-mcp-adapters Copy PIP instructions. There are many 1000s of Gradio apps on Hugging Face Spaces. If you're not sure which to choose, learn more about installing packages. Credentials You’ll need to have an Azure OpenAI instance deployed. It is stable to install the llama-cpp-python library by compiling from the source. Copy and save the generated key as NVIDIA_API_KEY. Tools can be just about anything — APIs, functions, databases, etc. The LangChain CLI is useful for working with LangChain templates and other LangServe projects. Open your terminal: Ensure you have access to a command line interface. LangChain v0. # !pip install -qU langchain langchain-openai langchain-tavily from typing import Any, Dict, Optional import datetime from langchain. load () or pip install "langserve[client]" for client code, and pip install "langserve[server]" for server code. export GROQ_API_KEY = gsk_ Chat Model. Sep 27, 2024 · I tried to run: "pip show langchain-groq" I got following output: Name: langchain-groq Version: 0. Qdrant is a vector store, which supports all the async operations, thus it will be used in this walkthrough. LangChain 프레임워크의 구성 1-1-3. Dec 16, 2023 · % pip install-U--quiet langchain-nvidia-ai-endpoints Setup. g. A valid API key is needed to communicate with the API. Or pip install "langserve[client]" for client code, and pip install "langserve[server]" for server code. Gradio. This is a relatively simple LLM application - it's just a single LLM call plus some prompting. To access Chroma vector stores you'll need to install the langchain-chroma integration package. 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. However, it is not required if you are only part of a single organization or intend to use your default organization. See a usage example. document_loaders import TextLoader from langchain_openai import OpenAIEmbeddings from langchain_text_splitters import CharacterTextSplitter # Load the document, split it into chunks, embed each chunk and load it into the vector store. 5 and I run into this issue with ModuleNotFoundError: No module named 'langchain. Released: Dec 20, 2024 Building applications with LLMs through composability. 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. Connect to Google's generative AI embeddings service using the GoogleGenerativeAIEmbeddings class, found in the langchain-google-genai package. Oct 1, 2023 · % pip install langchain. Once we have a key we'll want to set it as an environment variable by running: 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： Mar 3, 2025 · 🦜️🔗 LangChain Neo4j. LangChain CLI 🛠️ . 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. Open your terminal or command prompt. 0版本开始, 只支持python 3. 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： % 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 . langchain-community is currently on version 2 days ago · pip install-U langchain-google-vertexai Chat Models. Configuration. agents import create_openai_tools_agent, AgentExecutor from langchain. LangChain生态系统中的包大多依赖于langchain-core，它包含了其他包 Nov 5, 2024 · pip install langchain-qdrant Copy PIP instructions. langchain-community 包含第三方集成。安装方法： pip install langchain-community 3 days ago · 🦜🍎️ LangChain Core. This package contains the LangChain integration with Pinecone. This package contains the LangChain integration with the DeepSeek API. Apr 16, 2025 · langchain-mongodb Installation pip install -U langchain-mongodb Usage. Installation. Then click Generate Key. Anthropic recommends using their chat models over text completions. Learn how to install LangChain, a library for building AI applications with language models, and configure API keys and external services. Dec 19, 2024 · All features previously provided by langchain-databricks are now available in databricks-langchain. Setup . Installation % pip install --upgrade langchain-xai. Development. DocArray is a library for nested, unstructured, multimodal data in transit, including text, image, audio, video, 3D mesh, etc. 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. 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. chat_models import init_chat_model from langchain_core. Learn how to install, use, and contribute to langchain with documentation, examples, and resources. Navigation. To use IBM's models, you must have an IBM Cloud user API key. 0. 1. " return "It's 90 degrees and sunny. Install the new package: pip install databricks-langchain Update Imports: Replace occurrences of langchain_databricks in your code with from langchain_community. Installation pip install-U langchain-deepseek . Mar 16, 2024 · 这段代码不难理解，我们问了llama3. If I then run pip uninstall langchain, followed by pip install langchain, it proceeds to install langchain-0. Installation of LangChain. raw_documents = TextLoader ('state_of_the_union. com / langchain-ai / langchain Author: Author-email: License: MIT Location: u:\ project \n er \v nev \ lib \ site-packages Requires: groq, langchain Feb 15, 2025 · 我们需要安装 langchain 和 ollama 这两个 Python 库。可以使用 pip 进行安装： pip install langchain ollama langchain_community 使用 LangChain 调用本地 DeepSeek API 示例代码. Run the following command to install Langchain: pip install langchain Step 2: Install Langflow. Base interface for checkpointer changed 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. Apr 1, 2025 · langchain-ibm. vectorstores import DocArrayInMemorySearch from langchain_core. . This library puts them at the tips of your LLM's fingers 🦾. This package contains the LangChain integrations for Google products that are not part of langchain-google-vertexai or langchain-google-genai packages. from langchain_core. Source Distribution Nov 9, 2024 · 对于希望集成常用的大规模语言模型（LLMs）库的情况，在命令行执行如下指令可以完成带有额外组件支持版本的LangChain安装： ```bash pip install langchain[llms] ``` 此操作会自动下载并安装LangChain及其推荐 May 13, 2024 · from langchain_community. Installation pip install-U langchain-nomic . You need to set the ANTHROPIC_API_KEY environment variable. Here’s how to do it: Installation Steps. pip install-U langchain-deepseek 拷贝代码环节 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 Apr 7, 2025 · pip install-U langchain-postgres Change Log. import getpass import os LangChain CLI는 LangChain템플릿과 다른 LangServe프로젝트를 조작할 때 유용하다. 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 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. Credentials Head to the Groq console to sign up to Groq and generate an API key. prompts import ChatPromptTemplate from langchain_core. from_documents ( docs , embeddings ) query = "What did the president say about Ketanji Brown Jackson" docs = db . pip: pip install langchain-docling. Environment Jan 23, 2024 · # This code depends on pip install langchain[anthropic] from langgraph. This package provides the integration between LangChain and IBM watsonx. In this notebook we will show how those parameters map to the LangGraph react agent executor using the create_react_agent prebuilt helper method. This package contains the LangChain integration with Nomic. 2. Click on your model of choice. The Neo4jGraph class is a wrapper around Neo4j's Python driver. tools import DuckDuckGoSearchResults search = DuckDuckGoSearchResults () Here we focus on how to move from legacy LangChain agents to more flexible LangGraph agents. tnvhs ghlssz addlfl byyo sbxycj xuvi wjnyi commwrdtr ppcj lhj ovtjb sytzb linoa pszk pprmvwne