title: Pandas How to filter a Series
body: <p>I have a Series like this after doing groupby('name') and used mean() function on other column</p>
  
  <pre><code>name
  383      3.000000
  663      1.000000
  726      1.000000
  737      9.000000
  833      8.166667
  </code></pre>
  
  <p>Could anyone please show me how to filter out the rows with 1.000000 mean values? Thank you and I greatly appreciate your help.</p>