open gedit .bashrc add the line alias python=’/usr/bin/python3′ type for reloading source ~/.bashrc Now, gnulin@gnulin:~$ python -V Python 3.6.8
open gedit .bashrc add the line alias python=’/usr/bin/python3′ type for reloading source ~/.bashrc Now, gnulin@gnulin:~$ python -V Python 3.6.8