title: Iterate over pandas series
body: <p>I want to travel round the series index</p>
  <pre><code>In [44]: type(ed1)
  Out[44]: pandas.core.series.Series
  
  In [43]: for _, row  in ed1.iterrows():
  ...:     print(row.name)
  </code></pre>
  <p>and I get this error:</p>
  <pre><code>  AttributeError: 'Series' object has no attribute 'iterrows'
  </code></pre>
  <p>Does series has any methods like iterrows?</p>