Modulenotfounderror no module named langchain example Get insights and solutions to enhance your Python projects. Jun 1, 2023 · To resolve the "No Module Named Langchain" issue, it’s essential to ensure that Langchain is correctly installed and set up. Mar 27, 2025 · langchain-google-genai. 0, # For negative threshold: # Selector sorts examples by ngram overlap score, and excludes none. This section will guide you through the installation process using pip and the creation of a virtual environment to manage dependencies effectively. embed_query ("What is the meaning of life?") LLMs. datetime to datetime. The suggested solution is to ensure you are using the correct Python interpreter in your virtual environment. 12 to 3. adapters ¶. pydantic_v1 import BaseModel, I found a similar issue that might help you resolve the problem. It discusses methods to resolve this error and certain tips that will be handy to the user while working with the langchain library. Setup . To use, you should have an Anthropic API key configured. Feb 19, 2024 · 运行 python copy_config_example. 39 Mar 27, 2023 · pycode python main. [Fixed] typeerror can’t compare datetime. You can check your Python path by running import sys; print(sys. This project seems to be what I am looking for, but I am unable to run it smoothly. Documentation; End-to-end Example: Chat LangChain and repo; 🧱 Extracting structured output. messages import HumanMessage from langchain_google_vertexai import ChatVertexAI llm = ChatVertexAI (model_name = "gemini-pro-vision") Apr 1, 2023 · I am using Python 3. Aug 24, 2024 · Discover how to effectively resolve the ModuleNotFoundError for the LangChain module in Python with practical steps and troubleshooting tips. Installation and Setup. LangGraph Platform is infrastructure for deploying LangGraph agents. How to fix modulenotfounderror: no module named ‘langchain’? To fix the no module named ‘langchain’, here are some steps you can take to resolve this error: Solution 1 . Returns: A list of messages Examples:. Parameters. 10 Who can help? No response Information The official example notebooks/scripts My own modified scripts Related Components LLMs/Chat Models Embedding Models Prompts / Prompt Templates / Mar 27, 2025 · from langchain_aws import ChatBedrock llm = ChatBedrock llm. Aug 24, 2024 · If you're diving into the world of AI development and trying to harness the power of LangChain, you might come across a dreaded error: ModuleNotFoundError: No module named 'langchain'. Apr 2, 2025 · langchain-openai. bar import baz complaints ImportError: No module named bar. input_keys except for inputs that will be set by the chain’s memory. Is it what you expect? If not, Either rename foo or use absolute imports. py --recreate-vs; 问题出现 / MouduleNotFounndError:No module named 'pwd' 环境信息 / Environment Information. # The examples it has available to choose from. inputs (Union[Dict[str, Any], Any]) – Dictionary of inputs, or single input if chain expects only one param. 11. from langchain_openai import ChatOpenAI This page covers how to use the unstructured ecosystem within LangChain. See a usage example. Initialize 6 days ago · LangGraph is built by LangChain Inc, the creators of LangChain, but can be used without LangChain. May 29, 2024 · I have recently been working with langgraph and am looking for a convenient deployment method similar to langserve. Jan 1, 2024 · This article covers ‘No module named langchain’ in detail. To debug, say your from foo. Here are the steps you can follow: ChatOllama. llms I am using Python 3. Tavily's Search API is a search engine built specifically for AI agents (LLMs), delivering real-time, accurate, and factual results at speed. Ollama bundles model weights, configuration, and data into a single package, defined by a Modelfile. The issue is titled ModuleNotFoundError: No module named 'langchain' (Even though LangChain is installed) and is closed. runnables import Runnable from operator import itemgetter prompt = (SystemMessagePromptTemplate. . 6 and I installed the packages using pip3 install openai langchain Tavily Search. 0. LangChain integrates with many model providers. Dec 21, 2024 · "ModuleNotFoundError: No module named 'langchain. Dec 22, 2023 · Python might not be looking in the correct directory for the “langchain” module. Installation and Setup If you are using a loader that runs locally, use the following steps to get unstructured and its dependencies running. It is a commercial solution for deploying agentic applications to production, built on the open-source LangGraph framework. BedrockEmbeddings class exposes embeddings from Bedrock. Chat Models. py; 执行 python init_database. Nov 9, 2023 · System Info Ubuntu 22. llms. 2. Feb 15, 2024 · Using pip install langchain-community or pip install --upgrade langchain did not work for me in spite of multiple tries. Security note: Make sure that the database connection uses credentials. from langchain_community. This package contains the LangChain integration for Anthropic's generative models. Oct 25, 2022 · Common examples of these applications include: Question answering with RAG. Installation. Changing to import foo; print foo, which will show the path of foo. date Nov 13, 2023 · Resolve ModuleNotFoundError for langchain by ensuring it's installed in your Python environment and the IDE is configured for your interpreter or kernel. 04 langchain 0. While LangChain has its own message and model APIs, LangChain has also made it as easy as possible to explore other models by exposing an adapter to adapt LangChain models to the other APIs, as to the OpenAI API. 19¶ langchain_community. code-block:: python from typing import List, Optional from langchain_core. gremlin. from langchain_aws import BedrockEmbeddings embeddings = BedrockEmbeddings embeddings. Documentation; End-to-end Example: SQL Llama2 Template; 🤖 Chatbots. graph_qa. threshold =-1. chains. examples = examples, # The PromptTemplate being used to format the examples. embeddings'" 是使用 LangChain 过程中常见的错误，仔细的根据上述四个方面进行问题的逐一排查和检测，直到执行 pip check 时没有任何输出。同时, langchain的安装以及虚拟环境没有问题后则说明问题解决。最后重新运行自己的程序 Or, a module with the same name existing in a folder that has a high priority in sys. prompts import SystemMessagePromptTemplate from langchain_core. 0 by default. You can see their recommended models here. 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. Development. Ollama allows you to run open-source large language models, such as Llama 2, locally. Documentation; End-to-end Example: Web LangChain (web researcher chatbot) and repo; 📖 Documentation Mar 31, 2025 · pip install langchain-groq Request an API key and set it as an environment variable. To develop the langchain-groq package, you'll need to follow these instructions: Install dev dependencies poetry install--with test,test_integration,lint,codespell Build the package 5 days ago · Example: from langchain_core. path) in Python. BedrockLLM class exposes LLMs from Bedrock. " Dec 9, 2024 · langchain_community 0. Should contain all inputs specified in Chain. Mar 14, 2025 · langchain-anthropic. This package contains the LangChain integrations for OpenAI through their openai SDK. that are narrowly-scoped to only include necessary permissions. # It is set to -1. from_template ("You are a nice assistant. invoke ("Sing a ballad of LangChain. Using the PyCharm 'Interpreter Settings' GUI to manually install langchain-community instead, did the trick! In my case, I resolved the issue by downgrading from Python 3. export GROQ_API_KEY = gsk_ Chat Model. py", line 1, in <module> from langchain. The integration lives in the langchain-community package. 10，chatglm3; 使用的模型（ChatGLM2-6B / Qwen-7B 等）：ChatGLM3-6B Asynchronously execute the chain. llms import openai ImportError: No module named langchain. document_loaders' after running pip install 'langchain[all]', which appears to be installing langchain-0. 11 and then running the following command: Aug 24, 2024 · Discover a comprehensive guide to fix ModuleNotFoundError when using LangChain. This package contains the LangChain integrations for Gemini through their generative-ai SDK. GremlinQAChain¶ class langchain. example_prompt = example_prompt, # The threshold, at which selector stops. 332 python 3. output_parsers import StrOutputParser from langchain_core. 5 and I run into this issue with ModuleNotFoundError: No module named 'langchain. pip install -U langchain-anthropic. langchain-ChatGLM 版本/commit 号：langchain 0. ") Embeddings. GremlinQAChain [source] ¶ Bases: Chain. Installation pip install-U langchain-google-genai Chat Models The metadata attribute contains at least the following keys: source; page (if in mode page); total_page; creationdate; creator; producer; Additional metadata are specific to each parser. langchain. Adapters are used to adapt LangChain models to other APIs. This error can be frustrating, especially when you're in the thick of coding. path than your module's. Chain for question-answering against a graph by generating gremlin statements. py Traceback (most recent call last): File "main. fake import FakeStreamingListLLM from langchain_core. Anthropic recommends using their chat models over text completions. iays izodvs qsbbi vqcfqexy fiumvph udf wdsg kmo szcurh fgjyq xed kugg pad tcuoq jvdj