To install python-is-python2 in Ubuntu 2004 and later open the terminal and type. If you need to use multiple versions of Python or run different sets of packages in the Python environment you should probably just use Anaconda to create them for example. Pin On Web Pixer Open bashrc file and add new alias to change your default python executable. . It will give a response as following. The current default Python 3 version in Ubuntu 2004 is Python 3810. Switching between 26 and 27 should normally work. The script will be the same for Windows macOS and Linux. Once this is done restart your Command prompt and again type python version. Sudo apt update sudo apt install python-is-python2. Change python version on per user basis. You can modify the current directorys python-version file with the pyenv local command. Please do use this carefully as it might break things. So the alternative 1 will...