linux切换python2和python3。解决错误File "/usr/bin/yum", line 30 except KeyboardInterrupt, e:
找到安装的python3路径
/software/python37/bin
备份之前的软连接
mv /usr/bin/python /usr/bin/python.bak
建立新的软连接 ln -s /software/python37/bin/python37 /usr/bin/python
下图是切换回到了原来的python2.7.5
备份