一篇学习笔记

注意，如果您是通过搜索引擎发现的这篇文章，此笔记并不能帮到你。对不起qwq

在Pytorch下载页面有很多种安装方式。安装pytorch可以通过conda的方式安装，不过我安装不上去，我选择了pip安装。不过这里依旧记录一下换源方法。

因为一些奇怪的原因，首先需要将Anaconda的源换为清华大学Tuna镜像源。其实这个部分在Anaconda 镜像使用帮助中已经讲得很详细了。唯一注意的一点是执行conda config --set show_channel_urls yes之后，生成的文件是在C:Users你的用户名这里。按照网页上改就可以了。
改完之后打开Anaconda prompt， 复制Pytorch下载页面提供的命令即可安装

在Pytorch下载页面选择pip，复制到Anaconda prompt即可安装。不过如果出现ERROR: Could not install packages due to an OSError: [Errno 2] No such file or directory，复制下列代码，并保存为.reg文件后运行，然后再次运行下载指令。

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlFileSystem]
"LongPathsEnabled"=dword:00000001

具体原因在这里在版本 1607 Windows 10中启用长路径

打开 Anaconda prompt，输入python，运行

import torch
torch.cuda.is_available()

然后他告诉我No module named 'torch'。
血压高了

vscode有pytorch插件

以后再来看什么原因，先把我安装成功的output内容保存下来。

(base) C:UsersMaYeah>pip3 install torch==1.10.0+cu102 torchvision==0.11.1+cu102 torchaudio===0.10.0+cu102 -f https://download.pytorch.org/whl/cu102/torch_stable.html
Looking in links: https://download.pytorch.org/whl/cu102/torch_stable.html
Collecting torch==1.10.0+cu102
  Using cached https://download.pytorch.org/whl/cu102/torch-1.10.0%2Bcu102-cp37-cp37m-win_amd64.whl (1486.0 MB)
Collecting torchvision==0.11.1+cu102
  Using cached https://download.pytorch.org/whl/cu102/torchvision-0.11.1%2Bcu102-cp37-cp37m-win_amd64.whl (2.6 MB)
Collecting torchaudio===0.10.0+cu102
  Using cached https://download.pytorch.org/whl/cu102/torchaudio-0.10.0%2Bcu102-cp37-cp37m-win_amd64.whl (336 kB)
Requirement already satisfied: typing-extensions in c:usersmayeahappdatalocalpackagespythonsoftwarefoundation.python.3.7_qbz5n2kfra8p0localcachelocal-packagespython37site-packages (from torch==1.10.0+cu102) (3.10.0.2)
Collecting numpy
  Using cached numpy-1.21.3-cp37-cp37m-win_amd64.whl (14.0 MB)
Collecting pillow!=8.3.0,>=5.3.0
  Using cached Pillow-8.4.0-cp37-cp37m-win_amd64.whl (3.2 MB)
Installing collected packages: torch, pillow, numpy, torchvision, torchaudio
  WARNING: The scripts convert-caffe2-to-onnx.exe, convert-onnx-to-caffe2.exe and torchrun.exe are installed in 'C:UsersMaYeahAppDataLocalPackagesPythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0LocalCachelocal-packagesPython37scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
WARNING: The script f2py.exe is installed in 'C:UsersMaYeahAppDataLocalPackagesPythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0LocalCachelocal-packagesPython37scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed numpy-1.21.3 pillow-8.4.0 torch-1.10.0+cu102 torchaudio-0.10.0+cu102 torchvision-0.11.1+cu102

参考教程：VS2017配置opencv教程（超详细！！！）

openCV下载页面
我下的是4.5.4

https://www.cnblogs.com/q735613050/p/8969452.html
https://aistudio.baidu.com/aistudio/projectdetail/2545913?forkThirdPart=1

这两个网址是我找到的一些教程 其中第一个是openCV的教程，另一个是百度paddleCV的在线实例。
先去写数学作业了