title: How to change point to comma in matplotlib graphics?
body: <p>I want to change on the <code>yticklabel</code> decimal separator from a decimal point to a comma, but leave the format of the offset text (1e-14), after using code from <a href="https://stackoverflow.com/questions/8271564/matplotlib-comma-separated-number-format-for-axis">this code</a> or <a href="https://stackoverflow.com/questions/25973581/how-to-format-axis-number-format-to-thousands-with-a-comma-in-matplotlib">that code</a>.</p>
  
  <p><img src="https://i.stack.imgur.com/dVB7H.png" alt="1"></p>
  
  <p>My questions:</p>
  
  <ol>
  <li>How can I change the point to a comma and save 1e-14?</li>
  <li>How can I change <code>e</code> to <code>E</code> in the offset text? </li>
  </ol>
  
  <p>I am using Python 3.5</p>