ubunt 下python 2.x 升级到3.x
1.使用Ubuntu 系统查看python 版本是2.x 想升级成3.x系统里我的是2.x:mnt/hgfs/SHARE/Project/myPython$ pythonPython 2.7.12 (default, Jul 21 2020, 15:19:50) [GCC 5.4.0 20160609] on linux2Type "help", "copyright", "credits" or "license"