sudo install pip code example
Example 1: install pip ubuntu
sudo apt install python3-pip
Example 2: how to install pip ubuntu python2
sudo add-apt-repository universe
Example 3: sudo pip3 install
[server]$ pip3 --version
pip 18.1 from /home/username/opt/python-3.6.2/lib/python3.6/site-packages/pip (python 3.6)