title: Write a dict to a csv file on the right order
body: <p>I have a dict like this :</p>
  
  <pre><code>{
  'col1': [1, 2, 3],
  'col2': [4, 5, 6],
  'col3' : [7, 8, 9]
  }
  </code></pre>
  
  <p>and I want a csv like</p>
  
  <pre><code>col1;col2;col3
  1;4;7
  2;5;8
  3;6;9
  </code></pre>
  
  <p>I try with <code>for</code> loops but a don't succed to write the values in the right order. </p>