title: Running poetry fails with /usr/bin/env: ‘python’: No such file or directory
body: <p>I just installed poetry with the following install script</p>
  
  <pre><code>curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python3
  </code></pre>
  
  <p>However, when I execute poetry it fails with the following error</p>
  
  <pre><code>$ poetry
  /usr/bin/env: ‘python’: No such file or directory
  </code></pre>
  
  <p>I recently upgraded to ubuntu 20.04, is this an issue with the upgrade or with poetry?</p>