title: How do you set the "python" command to point to python2 instead of python3?
body: <p>Due to my own stupidity, I somehow set the python command to run python 3 instead of the default python 2. How do I undo this? I am on Ubuntu 18.04.</p>
  <pre><code>$ python -V
  Python 3.7.6
  $ python3 -V
  Python 3.7.6
  </code></pre>