PPPable的博客

今天在用pip安装opencv-python时，pip install opencv-python后速度极其缓慢，几分钟后提示下载失败，并报错如下：ERROR: Exception:Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pip/_vendor/urllib3/response.py", line 4.

WARNING: You are using pip version 20.0.2; however, version 20.2.2 is available.You should consider upgrading via the '/Library/Frameworks/Python.framework/Versions/3.8/bin/python3 -m pip install --upgrade pip' command.