title: Pandas dataframe: how to apply describe() to each group and add to new columns?
body: <p>df:</p>
  
  <pre><code>name score
  A      1
  A      2
  A      3
  A      4
  A      5
  B      2
  B      4
  B      6 
  B      8
  </code></pre>
  
  <p>Want to get the following new dataframe in the form of below:</p>
  
  <pre><code>   name count mean std min 25% 50% 75% max
      A     5    3    .. ..  ..  ..  ..  ..
      B     4    5    .. ..  ..  ..  ..  ..
  </code></pre>
  
  <p>How to exctract the information from df.describe() and reformat it?
  Thanks</p>