具体情况

• 安装指令：

pip install matplotlib-3.8.2-cp310-cp310-win_amd64.whl

-报错显示

Processing c:\users\upcda\downloads\matplotlib-3.8.2-cp310-cp310-win_amd64.whl
Collecting contourpy>=1.0.1 (from matplotlib==3.8.2)
  Using cached contourpy-1.2.0-cp310-cp310-win_amd64.whl.metadata (5.8 kB)
Requirement already satisfied: cycler>=0.10 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (0.10.0)
Collecting fonttools>=4.22.0 (from matplotlib==3.8.2)
  Using cached fonttools-4.47.2-cp310-cp310-win_amd64.whl.metadata (160 kB)
Collecting kiwisolver>=1.3.1 (from matplotlib==3.8.2)
  Using cached kiwisolver-1.4.5-cp310-cp310-win_amd64.whl.metadata (6.5 kB)
Requirement already satisfied: numpy<2,>=1.21 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (1.21.6)
Requirement already satisfied: packaging>=20.0 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (23.2)
Requirement already satisfied: pillow>=8 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (9.5.0)
Collecting pyparsing>=2.3.1 (from matplotlib==3.8.2)
  Using cached pyparsing-3.1.1-py3-none-any.whl.metadata (5.1 kB)
Requirement already satisfied: python-dateutil>=2.7 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (2.8.2)
Requirement already satisfied: six in d:\anaconda\envs\drl\lib\site-packages (from cycler>=0.10->matplotlib==3.8.2) (1.16.0)
ERROR: Could not install packages due to an OSError: [Errno 2] No such file or directory: 'd:\\anaconda\\envs\\drl\\lib\\site-packages\\numpy-1.21.6.dist-info\\METADATA'

• 解决方法
  按照报错中的路径 找到：“numpy-1.21.6.dist-info”并删除，之后便可以成功安装。

Processing c:\users\upcda\downloads\matplotlib-3.8.2-cp310-cp310-win_amd64.whl
Collecting contourpy>=1.0.1 (from matplotlib==3.8.2)
  Using cached contourpy-1.2.0-cp310-cp310-win_amd64.whl.metadata (5.8 kB)
Requirement already satisfied: cycler>=0.10 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (0.10.0)
Collecting fonttools>=4.22.0 (from matplotlib==3.8.2)
  Using cached fonttools-4.47.2-cp310-cp310-win_amd64.whl.metadata (160 kB)
Collecting kiwisolver>=1.3.1 (from matplotlib==3.8.2)
  Using cached kiwisolver-1.4.5-cp310-cp310-win_amd64.whl.metadata (6.5 kB)
Requirement already satisfied: numpy<2,>=1.21 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (1.26.3)
Requirement already satisfied: packaging>=20.0 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (23.2)
Requirement already satisfied: pillow>=8 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (9.5.0)
Collecting pyparsing>=2.3.1 (from matplotlib==3.8.2)
  Using cached pyparsing-3.1.1-py3-none-any.whl.metadata (5.1 kB)
Requirement already satisfied: python-dateutil>=2.7 in d:\anaconda\envs\drl\lib\site-packages (from matplotlib==3.8.2) (2.8.2)
Requirement already satisfied: six in d:\anaconda\envs\drl\lib\site-packages (from cycler>=0.10->matplotlib==3.8.2) (1.16.0)
Downloading contourpy-1.2.0-cp310-cp310-win_amd64.whl (186 kB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 186.7/186.7 kB 143.0 kB/s eta 0:00:00
Downloading fonttools-4.47.2-cp310-cp310-win_amd64.whl (2.2 MB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 2.2/2.2 MB 1.2 MB/s eta 0:00:00
Downloading kiwisolver-1.4.5-cp310-cp310-win_amd64.whl (56 kB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 56.1/56.1 kB ? eta 0:00:00
Downloading pyparsing-3.1.1-py3-none-any.whl (103 kB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 103.1/103.1 kB 5.8 MB/s eta 0:00:00
Installing collected packages: pyparsing, kiwisolver, fonttools, contourpy, matplotlib
  Attempting uninstall: pyparsing
    Found existing installation: pyparsing 2.2.0
    Uninstalling pyparsing-2.2.0:
      Successfully uninstalled pyparsing-2.2.0
  Attempting uninstall: kiwisolver
    Found existing installation: kiwisolver 1.0.1
    Uninstalling kiwisolver-1.0.1:
      Successfully uninstalled kiwisolver-1.0.1
Successfully installed contourpy-1.2.0 fonttools-4.47.2 kiwisolver-1.4.5 matplotlib-3.8.2 pyparsing-3.1.1