I was trying to set default python version to python3 in Ubuntu 16.04. By default it is python2 (2.7). I followed below steps :
Just follow these steps to help change the default python to the newly upgrade python version. Worked well for me.
sudo apt-install python3.7 Install the latest version of python you wantcd /usr/bin Enter the root directory where python is installedsudo unlink python or sudo unlink python3 . Unlink the current default pythonsudo ln -sv /usr/bin/python3.7 python Link the new downloaded python versionpython --version Check the new python version and you're good to go