title: Print python list without quotation marks or space after commas
body: <p>So right now I have a list of file names. I want to print them without the space after the comma and without quotation marks.</p>
  <p>So basically I have a file that has the following output:</p>
  <pre><code>['1', '2', '3']
  </code></pre>
  <p>And I want the output to be</p>
  <pre><code>1,2,3
  </code></pre>