title: How to range the y axis of heatmap
body: <p>I created a heatmap by using the following data</p>
  <pre><code>weekdays    hours
  0   6   22:00
  1   6   22:00
  2   0   06:00
  3   0   10:00
  4   0   10:00
  ... ... ...
  153 1   12:00
  154 1   12:00
  155 1   12:00
  156 1   12:00
  157 1   12:00
  
  ax = sns.heatmap(df.groupby([dfx.weekdays, dfx.hours]) # time_object
     ['date'].count()
     .rename_axis(index=['weekdays','hours'])
     .unstack(level=0)
  )
  </code></pre>
  <p><a href="https://i.stack.imgur.com/z3nVg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/z3nVg.png" alt="enter image description here" /></a></p>
  <p>and I want to rearrange the y axis like below heatmaps y axis, how can I do it</p>
  <p><a href="https://i.stack.imgur.com/Ok2rK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Ok2rK.png" alt="enter image description here" /></a></p>