ppa:jonathonf/python-3.6 報錯解決辦法

ubuntu16.04などでpython3.6を入れるときに
ppa:jonathonf/python-3.6
のppaを使っていたんですが、非公開になってしまってちょっと困ったのでメモ

変更前

sudo add-apt-repository ppa:jonathonf/python-3.6
sudo apt update
sudo apt install python3.6

apt update時のログ

W: The repository 'http://ppa.launchpad.net/jonathonf/python-3.6/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/jonathonf/python-3.6/ubuntu/dists/xenial/main/binary-amd64/Packages  403  Forbidden [IP: 91.189.95.83 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.

ppaを以下に変更
ppa:deadsnakes/ppa

変更後

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt update
sudo apt install python3.6

こっちだと入れられる