如图显示该警告信息WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=Non
只需在命令行后面加上-i http://pypi.douban.com/simple --trusted-host pypi.douban.com 指定安装源即可

如图显示该警告信息WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=Non
只需在命令行后面加上-i http://pypi.douban.com/simple --trusted-host pypi.douban.com 指定安装源即可