title: Compute row average in pandas
body: <pre><code>       Y1961      Y1962      Y1963      Y1964      Y1965  Region
  0  82.567307  83.104757  83.183700  83.030338  82.831958  US
  1   2.699372   2.610110   2.587919   2.696451   2.846247  US
  2  14.131355  13.690028  13.599516  13.649176  13.649046  US
  3   0.048589   0.046982   0.046583   0.046225   0.051750  US
  4   0.553377   0.548123   0.582282   0.577811   0.620999  US
  </code></pre>
  
  <p>In the above dataframe, I would like to get average of each row. currently, I am doing this:</p>
  
  <pre><code>df.mean(axis=0)
  </code></pre>
  
  <p>However, this does away with the Region column as well. how can I compute mean and also retain Region column</p>