title: How to convert a list of longs into a comma separated string in python
body: <p>I'm new to python, and have a list of longs which I want to join together into a comma separated string.</p>
  
  <p>In PHP I'd do something like this:</p>
  
  <pre><code>$output = implode(",", $array)
  </code></pre>
  
  <p>In Python, I'm not sure how to do this. I've tried using join, but this doesn't work since the elements are the wrong type (i.e., not strings). Do I need to create a copy of the list and convert each element in the copy from a long into a string? Or is there a simpler way to do it?</p>