pip3 install virtualenvwrapper-win -i http://pypi.douban.com/simple --trusted-host pypi.douban.com
pip3 install pandas -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host=mirrors.aliyun.com/pypi/simple
pip3 install virtualenvwrapper-win -i http://pypi.douban.com/simple --trusted-host pypi.douban.com
pip3 install pandas -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host=mirrors.aliyun.com/pypi/simple