pip安装报错WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after

python -m pip install --upgrade pip -i http://pypi.douban.com/simple --trusted-host pypi.douban.com
#升级pip
pip install openpyxl -i http://pypi.douban.com/simple --trusted-host pypi.douban.com
#安装openpyxl等各种库
#简单pip安装不上的,这个镜像简直不要太好用!

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