需求: centos环境,python2.7需要升级为python3.x 1.请先手动(再次)安装 openssl .否则你升级之后,你的pip不能下载,会各种报错的. 比如这种错误: ImportError: Entry point ('console_scripts', 'easy_install') not foundpip is configured with locations that require TLS/SSL, however the ssl module in Python…