title: How to group data on Pandas with multiple conditions?
body: <p>This is my table </p>
  
  <pre><code>timestamp        date month  day   hour   price
  0  2017-01-01 00:00  01/01/2017   Jan  Sun  00:00  60.23
  1  2017-01-01 01:00  01/01/2017   Jan  Sun  01:00  60.73
  2  2017-01-01 02:00  01/01/2017   Jan  Sun  02:00  75.99
  3  2017-01-01 03:00  01/01/2017   Jan  Sun  03:00  60.76
  4  2017-01-01 04:00  01/01/2017   Jan  Sun  04:00  49.01
  </code></pre>
  
  <p>I have data for all 24 hours of the day for everyday and every month for a whole year. </p>
  
  <p>I want to group the data per season for a weekdays and weekend, for example
  Weekend_Winter = All Saturday and Sunday datas for months Nov,Dec,Jan,Feb </p>
  
  <p>Quite a newbie to this so any help would be useful</p>