Python资源安装过程出现Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None))…………
问题：安装包出现Retrying(Retry(total4,connectNone,readNone,redirectNone,statusNone))afterconnectionbrokenby'ConnectTimeoutError解决办法： pipinstallselectivesearch
