参考:
https://blog.csdn.net/beijiu5854/article/details/77897767
https://blog.csdn.net/l_15156024189/article/details/84831045
update-alternatives –list python
update-alternatives: error: no alternatives for python
如果出现以上所示的错误信息,则表示 Python 的替代版本尚未被update-alternatives 命令识别。想解决这个问题,我们需要更新一下替代列表,将python2.7 和 python3.4 放入其中。
update-alternatives –install /usr/bin/python python /usr/bin/python2.7 1
显示
update-alternatives: using /usr/bin/python2.7 to provide /usr/bin/python (python) in auto mode
update-alternatives –install /usr/bin/python python /usr/bin/python3.5 2
显示
update-alternatives: using /usr/bin/python3.4 to provide /usr/bin/python (python) in auto mode
update-alternatives –list python
可以显示选择界面