title: Add some characters at the beginning of each line
body: <p>I'd like to add some characters to the beginning of each line.</p>
  
  <p>How could I do ?</p>
  
  <p>I was doing that:</p>
  
  <p><code>'\n\t\t\t'.join(myStr.splitlines())</code></p>
  
  <p>But it isn't perfect and I'd like to know if there are better ways to do that. I originally want to indent a whole block of text automatically.</p>