title: Convert dataframe row into string of values without column indexes in python
body: <p>I have a dataframe row and want to get it as a string of just the values, no columns.</p>
  
  <pre><code>col1 | col2 | col3
  -----------------
  1    | 2    | 3
  x    | y    | z
  </code></pre>
  
  <p>I'd like to be able to select just one row and have it as a string like:</p>
  
  <pre><code>'1','2','3'
  </code></pre>
  
  <p>But I keep getting the column names still in there, or lots of other values like:</p>
  
  <pre><code>"['1' '2'\n '3']"
  </code></pre>