title: Pandas value_count where row name
body: <pre><code>Count   Month   Fruit
  1       Mar     Apple
  2       Apr     Kiwi
  4       Jun     Orange
  8       Dec     Kiwi
  12      Nov     Kiwi
  4       Oct     Melon
  </code></pre>
  
  <p>With</p>
  
  <pre><code>counts = ou['Fruit'].value_counts().to_frame()
  </code></pre>
  
  <p>I get </p>
  
  <pre><code>Apple:  1 
  Kiwi:   3 
  Orange: 1 
  Melon:  1
  </code></pre>
  
  <p>I tried something like that</p>
  
  <pre><code>counts = ou['Fruit'].where("Kiwi").value_counts()
  </code></pre>
  
  <p>How is it possible to count only the kiwis?
  that the output is only 
  3 or Kiwis: 3</p>