title: How to completely replace python 3 with python 2 in arch linux
body: <p>I want to completely replace python 3 with python 2 in arch linux. I have already read <a href="https://wiki.archlinux.org/index.php/Python" rel="noreferrer">https://wiki.archlinux.org/index.php/Python</a> but it only provides a temporary fix. I need to ensure that when I call</p>
  
  <pre><code>#!/usr/bin/python
  </code></pre>
  
  <p>My program is using python 2 instead of python 3.</p>