解决安装catboost时ReadtimeError的问题

改用清华镜像源

pip install catboost -i https://pypi.tuna.tsinghua.edu.cn/simple

pip install ngboost -i https://pypi.tuna.tsinghua.edu.cn/simple

pip install xgboost -i https://pypi.tuna.tsinghua.edu.cn/simple