title: Python get the index of search within data frame and not an array with type of index
body: <p>I need to get the value of the index and not an array following a criteria:</p>
  <pre><code>quarterValue = 20
  indexOf = df[df[&quot;Quarter&quot;]==quarterValue].index
  </code></pre>
  <p>The returning value is:</p>
  <blockquote>
  <p>Int64Index([34], dtype='int64')</p>
  </blockquote>
  <p>What I need is only:</p>
  <p><code>34</code></p>