我跟着别人写的教程安装python3.6，但是我就是装不上，也不知道咋解决，所以这是啥情况呢
我的
x@x-virtual-machine:~$ sudo add-apt-repository ppa:jonathonf/python-3.6
Cannot add PPA: 'ppa:~jonathonf/ubuntu/python-3.6'.
The user named '~jonathonf' has no PPA named 'ubuntu/python-3.6'
Please choose from the following available PPAs:
* 'ansible': Ansible
* 'atslang': ATS2 programming language
* 'backports': Backport collection
* 'barrier': Barrier
* 'bazel': Bazel
* 'byobu': Byobu
* 'calibre': Calibre
* 'clementine': Clementine
* 'compton': Compton
* 'cpan': Packaged CPAN modules
* 'debhelper': debhelper
* 'debhelper-10': debhelper 10
* 'debhelper-11': debhelper 11
* 'debhelper-12': debhelper 12
* 'debhelper-trusty': debhelper for trusty
别人的
