pip安装selenium,pip install selenium==2.48.0时,报以下错误
重点在最后一句
You are using pip version 9.0.1, however version 19.0.3 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
此时输入python -m pip install --upgrade pip 出现新的错误
网上搜索的解决办法是使用管理员权限打开cmd 再重新输入python -m pip install --upgrade pip
但是并没有生效 还在继续报错Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None))
另一篇博文https://blog.youkuaiyun.com/qq_25964837/article/details/80295041显示解决办法为
输入pip install selectivesearch -i htt