pip3 install beautifulsoup4 -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com python安装bs4
pip3 install beautifulsoup4 -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com 深耕网站设计与一线实操的经验洞察。
pip3 install beautifulsoup4 -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com