Ubah antara dua versi Python 3 di Raspberrry Pi
sudo update-alternatives --install /usr/bin/python3 python3 /usr/local/bin/python3.6 0
How it works
sudo update-alternative --install <link> <name> <path> <priority>
how to check what is the priority list ?
sudo update-alternatives --config python3
Silly Skipper