title: How to iterate through grouby object in Panda
body: <p>I am grouping by panda frame based on two columns and adding the sum of a third column to this groupby object. It works perfectly, but I am trying to figure out how should I iterate through this returned object.</p>
  
  <p>Below is the command I used to groupby and sum.</p>
  
  <pre><code>groupby_abundance=df.groupby(['mi','Organism_name'])[['Rep_Abun']].sum()   
  print groupby_abundance
  </code></pre>
  
  <p>This is the output from above print.</p>
  
  <pre><code>                         Rep_Abun
  mi     Organism_name          
  mi1023 Daylily               9
  mi1030 Maize                642
          Kniphofia            17
          Nymphaea            133
  mi1083 Liriope               6
  mi1097 Kniphofia             6
  mi1098 Coconut              95
  </code></pre>
  
  <p>I want to iterate through <code>groupby_abundance</code>.</p>
  
  <p>Thanks for helping in advance.</p>