Langchain-Chatchat-win10本地安装部署笔记（CPU）

Langchain-Chatchat（原Langchain-ChatGLM）基于 Langchain 与 ChatGLM 等语言模型的本地知识库问答 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowledge based LLM (like ChatGLM) QA app with langchain。

开源网址：https://github.com/chatchat-space/Langchain-Chatchat

因为这是自己毕设项目所需，利用虚拟机实验一下是否能成功部署。项目参考：Langchain-Chatchat-win10本地安装部署成功笔记（CPU）_file "d:\ai\virtual-digital-human\langchain-chatch-CSDN博客

其中有些是自己遇到的坑也会在这里说一下。

一、实验环境

二、安装步骤

1、安装 Anaconda软件，用于管理python虚拟环境

官网地址： Anaconda | Unleash AI innovation and value，下载free版的anaconda，按导航默认安装即可。

参考文章：Anaconda安装和入门(超级简单详细的安装步骤)-CSDN博客

2、创建python运行虚拟环境

因为在 anaconda 安装中作者不建议将其加入到 PATH 中，所以该项目均在 anaconda promote 中执行（这个跟命令行终端是一样的）。（注意以管理员身份运行）

没有安装python，创建环境会自动帮你安装 python 环境。

执行命令：

conda create -n l2 python=3.10.12

Collecting package metadata (current_repodata.json): done
Solving environment: unsuccessful attempt using repodata from current_repodata.json, retrying with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: done


==> WARNING: A newer version of conda exists. <==
  current version: 23.7.4
  latest version: 23.11.0

Please update conda by running

    $ conda update -n base -c defaults conda

Or to minimize the number of packages updated during conda update use

     conda install conda=23.11.0



## Package Plan ##

  environment location: D:\Anaconda\anaconda\envs\l2

  added / updated specs:
    - python=3.10.12


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    openssl-3.0.12             |       h2bbff1b_0         7.4 MB
    ------------------------------------------------------------
                                           Total:         7.4 MB

The following NEW packages will be INSTALLED:

  bzip2              pkgs/main/win-64::bzip2-1.0.8-he774522_0
  ca-certificates    pkgs/main/win-64::ca-certificates-2023.12.12-haa95532_0
  libffi             pkgs/main/win-64::libffi-3.4.4-hd77b12b_0
  openssl            pkgs/main/win-64::openssl-3.0.12-h2bbff1b_0
  pip                pkgs/main/win-64::pip-23.3.1-py310haa95532_0
  python             pkgs/main/win-64::python-3.10.12-he1021f5_0
  setuptools         pkgs/main/win-64::setuptools-68.2.2-py310haa95532_0
  sqlite             pkgs/main/win-64::sqlite-3.41.2-h2bbff1b_0
  tk                 pkgs/main/win-64::tk-8.6.12-h2bbff1b_0
  tzdata             pkgs/main/noarch::tzdata-2023d-h04d1e81_0
  vc                 pkgs/main/win-64::vc-14.2-h21ff451_1
  vs2015_runtime     pkgs/main/win-64::vs2015_runtime-14.27.29016-h5e58377_2
  wheel              pkgs/main/win-64::wheel-0.41.2-py310haa95532_0
  xz                 pkgs/main/win-64::xz-5.4.5-h8cc25b3_0
  zlib               pkgs/main/win-64::zlib-1.2.13-h8cc25b3_0


Proceed ([y]/n)? y


Downloading and Extracting Packages

Preparing transaction: done
Verifying transaction: done
Executing transaction: done
#
# To activate this environment, use
#
#     $ conda activate l2
#
# To deactivate an active environment, use
#
#     $ conda deactivate

可以通过 conda info --envs 检查环境是否创建完成。

(base) C:\Windows\system32>conda info --envs
# conda environments:
#
base                  *  D:\Anaconda\anaconda
l2                       D:\Anaconda\anaconda\envs\l2

进入已经创建好的虚拟环境：conda activate l2

(base) C:\Windows\system32>conda activate l2

(l2) C:\Windows\system32>python
Python 3.10.12 | packaged by Anaconda, Inc. | (main, Jul  5 2023, 19:01:18) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>

python 可以正常使用。

3、安装pytorch

安装pytorch版本是比较麻烦的事情，有一个比较简单的方法：访问url: Start Locally | PyTorch，自动判断当前系统可安装的版本。如下图：

运行推荐的命令安装pytorch，用清华源：

(l2) D:\>pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu118
Looking in indexes: https://download.pytorch.org/whl/cu118
Collecting torch
  Downloading https://download.pytorch.org/whl/cu118/torch-2.1.2%2Bcu118-cp310-cp310-win_amd64.whl (2722.7 MB)
     ---------------------------------------- 2.7/2.7 GB 714.6 kB/s eta 0:00:00
Collecting torchvision
  Downloading https://download.pytorch.org/whl/cu118/torchvision-0.16.2%2Bcu118-cp310-cp310-win_amd64.whl (4.9 MB)
     ---------------------------------------- 4.9/4.9 MB 2.7 MB/s eta 0:00:00
Collecting torchaudio
  Downloading https://download.pytorch.org/whl/cu118/torchaudio-2.1.2%2Bcu118-cp310-cp310-win_amd64.whl (3.9 MB)
     ---------------------------------------- 3.9/3.9 MB 3.9 MB/s eta 0:00:00
Collecting filelock (from torch)
  Downloading https://download.pytorch.org/whl/filelock-3.9.0-py3-none-any.whl (9.7 kB)
Collecting typing-extensions (from torch)
  Downloading https://download.pytorch.org/whl/typing_extensions-4.4.0-py3-none-any.whl (26 kB)
Collecting sympy (from torch)
  Downloading https://download