title: BubbleSort CSV by specific column
body: <p>I've got a csv-file containing multiple rows and colums.
  I want to use python and bubblesort to sort the file by a specific column.
  For example:</p>
  
  <p>Input csv-file:</p>
  
  <blockquote>
  <pre><code>Daniel,New York,23456,Gaming
  Melinda,Washington,45678,Sports
  Dave,Chicago,12345,Hiking
  Ross,Boston,34567,Chess
  </code></pre>
  </blockquote>
  
  <p>Output:</p>
  
  <blockquote>
  <pre><code>Dave,Chicago,12345,Hiking
  Daniel,New York,23456,Gaming
  Ross,Boston,34567,Chess
  Melinda,Washington,45678,Sports
  </code></pre>
  </blockquote>
  
  <p>In this example the rows should be sorted by the third column.</p>
  
  <p>Until now i'm only able to sort the third column but the other columns stay in place.</p>