python --version
2. Remove all python 2.7 artifacts
sudo apt purge -y python2.7-minimal
3. Ubuntu 20.04 comes with python3 installed. Instead of typing python3 every time, You can create a symlink to make it accessible using python command.
sudo ln -s /usr/bin/python3 /usr/bin/python
4. Check if pip3(python3 package manger) installed or not by typging:
pip3
5. If not installed, use below command to install it:
sudo apt-get install python3-pip