title: insert_row or append_row with Gspread python
body: <p>When I run my script insert_row and append_row are putting each letter of the string into a new column.</p>
  
  <p>Trying to insert an id '877' for example.</p>
  
  <p>Didn't like integers</p>
  
  <pre><code>worksheet.append_row(877)
  </code></pre>
  
  <p>Returns</p>
  
  <blockquote>
    <p>*** TypeError: object of type 'int' has no len()</p>
  </blockquote>
  
  <p>Tried wrapping this in the str() and it creates a new column for each letter.</p>
  
  <p>What am I doing wrong?!</p>