YOLOV5误删了几个安装包，真的很苦恼，在原来的基础上的解决办法如下：
1.激活pytorch
conda activate pytorch
2.安装缺少的包
pip install brotli -i https://pypi.douban.com/simple
pip install chardet -i https://pypi.douban.com/simple
pip install scikit-image -i https://pypi.douban.com/simple
3.错误安装pillow，卸载
pip uninstall pillow
4.
(pytorch) C:Users87547>pip uninstall pillow
Found existing installation: Pillow 9.2.0
Uninstalling Pillow-9.2.0:
Would remove:
d:anacondaenvspytorchlibsite-packagespil_imagingcms.cp39-win_amd64.pyd
d:anacondaenvspytorchlibsite-packagespilconcrt140.dll
d:anacondaenvspytorchlibsite-packagespilmsvcp140.dll
d:anacondaenvspytorchlibsite-packagespilmsvcp140_1.dll
d:anacondaenvspytorchlibsite-packagespilmsvcp140_2.dll
d:anacondaenvspytorchlibsite-packagespilmsvcp140_atomic_wait.dll
d:anacondaenvspytorchlibsite-packagespilmsvcp140_codecvt_ids.dll
d:anacondaenvspytorchlibsite-packagespilvccorlib140.dll
d:anacondaenvspytorchlibsite-packagespilvcruntime140.dll
d:anacondaenvspytorchlibsite-packagespilvcruntime140_1.dll
d:anacondaenvspytorchlibsite-packagespillow-9.2.0.dist-info*
Proceed (Y/n)? y
Successfully uninstalled Pillow-9.2.0
(pytorch) C:Users87547>pip install pillow -i https://pypi.douban.com/simple
Looking in indexes: https://pypi.douban.com/simple
Collecting pillow
Downloading https://pypi.doubanio.com/packages/19/3f/b4d4bcf05dbcbe07f2e9613a8f4180c297395e73a91d8ad22c32c6624f8c/Pillow-9.2.0-cp39-cp39-win_amd64.whl (3.3 MB)
---------------------------------------- 3.3/3.3 MB 9.1 MB/s eta 0:00:00
5.重新下载pillow
pip install pillow -i https://pypi.douban.com/simple
安装成功如下：
(pytorch) C:Users87547>pip install pillow -i https://pypi.douban.com/simple
Looking in indexes: https://pypi.douban.com/simple
Collecting pillow
Downloading https://pypi.doubanio.com/packages/19/3f/b4d4bcf05dbcbe07f2e9613a8f4180c297395e73a91d8ad22c32c6624f8c/Pillow-9.2.0-cp39-cp39-win_amd64.whl (3.3 MB)
---------------------------------------- 3.3/3.3 MB 9.1 MB/s eta 0:00:00
Installing collected packages: pillow
Successfully installed pillow-9.2.0
(pytorch) C:Users87547>pip list
Package Version
----------------------- --------------------
absl-py 1.2.0
Brotli 1.0.9
cachetools 4.2.4
certifi 2022.6.15
chardet 5.0.0
charset-normalizer 2.1.0
colorama 0.4.5
cycler 0.11.0
fonttools 4.34.4
google-auth 1.35.0
google-auth-oauthlib 0.4.6
grpcio 1.47.0
idna 3.3
imageio 2.19.5
importlib-metadata 4.12.0
kiwisolver 1.4.4
Markdown 3.4.1
MarkupSafe 2.1.1
matplotlib 3.5.2
networkx 2.8.5
numpy 1.23.1
oauthlib 3.2.0
opencv-python 4.6.0.66
packaging 21.3
pandas 1.4.3
Pillow 9.2.0
pip 22.1.2
protobuf 3.19.4
pyasn1 0.4.8
pyasn1-modules 0.2.8
pycocotools 2.0.2
pyparsing 3.0.9
python-dateutil 2.8.2
pytz 2022.1
PyWavelets 1.3.0
PyYAML 6.0
requests 2.28.1
requests-oauthlib 1.3.1
rsa 4.9
scikit-image 0.19.3
scipy 1.8.1
seaborn 0.11.2
setuptools 61.2.0
six 1.16.0
tensorboard 2.9.1
tensorboard-data-server 0.6.1
tensorboard-plugin-wit 1.8.1
thop 0.1.1.post2207130030
tifffile 2022.5.4
torch 1.11.0+cu115
torchvision 0.12.0+cu115
tqdm 4.64.0
typing_extensions 4.3.0
urllib3 1.26.11
Werkzeug 2.2.0
wheel 0.37.1
wincertstore 0.2
zipp 3.8.1
6.查看列表
pip list
整个过程如下：
