LangChain入门(一)访问LLM模型

墨蓝 2024-03-22 11:33 51阅读 0赞

[GitHub - liaokongVFX/LangChain-Chinese-Getting-Started-Guide: LangChain 的中文入门教程LangChain 的中文入门教程. Contribute to liaokongVFX/LangChain-Chinese-Getting-Started-Guide development by creating an account on GitHub.![fluidicon.png][]https://github.com/liaokongVFX/LangChain-Chinese-Getting-Started-Guide][GitHub - liaokongVFX_LangChain-Chinese-Getting-Started-Guide_ LangChain _LangChain _. Contribute to liaokongVFX_LangChain-Chinese-Getting-Started-Guide development by creating an account on GitHub._fluidicon.png_https_github.com_liaokongVFX_LangChain-Chinese-Getting-Started-Guide]

**目录**

一、安装langchain

二、langchain依赖LLM模型、数据库、外部的api接口等，以openAI的为例

三、获取OpenAI的key

四、简单示例

--------------------

#### 一、安装 ####

pip install langchain

或者

conda install langchain -c conda-forge

![5142f5d6120741d9bed8fbaf6ba4ace4.png][]

#### 二、langchain依赖LLM模型、数据库、外部的api接口等，以[openAI][]的为例 ####

pip install openai

![2ced6b7ba69b44ebac56c2733cc2bbed.png][]

#### 三、获取OpenAI的key ####

![e946dd9e687745929c701ec5ed9fbdc9.png][]

#### 四、简单示例 ####

import os
    from langchain.llms import OpenAI
    
    os.environ["OPENAI_API_KEY"] = '***************'
    
    
    llm = OpenAI(model_name="text-davinci-003", max_tokens=1024)
    result = llm("怎么评价人工智能")
    print(result)

![fea99cc3ac534194a6453172be5dcf76.png][]

[fluidicon.png]: https://github.com/fluidicon.png
[GitHub - liaokongVFX_LangChain-Chinese-Getting-Started-Guide_ LangChain _LangChain _. Contribute to liaokongVFX_LangChain-Chinese-Getting-Started-Guide development by creating an account on GitHub._fluidicon.png_https_github.com_liaokongVFX_LangChain-Chinese-Getting-Started-Guide]: https://github.com/liaokongVFX/LangChain-Chinese-Getting-Started-Guide
[5142f5d6120741d9bed8fbaf6ba4ace4.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/3781627ee04c483583bf878c7e08dc9f.png
[openAI]: https://so.csdn.net/so/search?q=openAI&spm=1001.2101.3001.7020
[2ced6b7ba69b44ebac56c2733cc2bbed.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/9b36642b9c434cab8af70ca8de3252c3.png
[e946dd9e687745929c701ec5ed9fbdc9.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/45b9b29528df48ec9978a671696773d0.png
[fea99cc3ac534194a6453172be5dcf76.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/a8d378b945764f7d956526d8970695ed.png