title: When .join is not allowed, how to add commas in string Python
body: <p>PYTHON code</p>
  <pre><code>def __str__(self):
      return_string = &quot;&quot;
      return return_string
  
      '''Return string with all items from the array
      Have a comma and a space between them
      but no brackets ([ ]) around them'''
      
  </code></pre>
  <p>Does anyone have a way of doing this without using .join, .append or formatting :) ?</p>