title: How do I implement a progress bar
body: <p>How do I implement a progress bar in jupyter-notebook?</p>
  <p>I've done this:</p>
  <pre class="lang-py prettyprint-override"><code>count = 0
  max_count = 100
  bar_width = 40
  while count &lt;= max_count:
      time.sleep(.1)
      b = bar_width * count / max_count
      l = bar_width - b
      print '\r' + u&quot;\u2588&quot; * b + '-' * l,
      count += 1
  </code></pre>
  <p>Which is great when I have access to a loop in which to print stuff out.  But does anyone know of anything clever to run a progress bar of some sort asynchronously?</p>