ERROR: Could not install packages due to an OSError: [WinError 5] 拒绝访问。: 'D:\\Program Files (x86)\\Python\\Python39-32\\Lib\\site-packages\\_ruamel_yaml.cp39-win32.pyd'
Consider using the `--user` option or check the permissions.
解决方法：
在命令行中添加--user。如：
pip install mitmproxy==6.0.2 --user
