title: how to indent multiline message printed by python logger?
body: <p>Current behaviour:</p>
  
  <pre><code>DEBUG:package:123 &gt; message with
  multiple lines
  foo bar
  </code></pre>
  
  <p>Wanted behaviour:</p>
  
  <pre><code>DEBUG:package:123 &gt; message with
                      multiple lines
                      foo bar
  </code></pre>
  
  <p><code>DEBUG:package:123</code> can have different width so it's not possible to adjust message before sending it to logger.</p>