title: How to uninstall python 3.7 from Ubuntu 19.10?
body: <p>I'm using <code>Ubuntu 19.10</code>, in which there is python of version <code>3.7</code>. After the release of <code>python 3.8</code>, which I have installed, now I want to uninstall <code>python 3.7</code> so that whenever I would call <code>python3</code> in my terminal, it would always call <code>python3.8</code>?</p>