title: Matplotlib: Thousands separator for y axis
body: <p>I have created a histogram and everything is working, the only thing that is missing is a thousands separator for the y-axis. How can I fit one in conveniently? None of the other documented answers worked, unfortunately.</p>
  <pre><code># Creating a histogram for order_hour_of_day with titles, labels for the axes and 
  #thousands separator (last is still missing)
  hist2 = df_final['order_hour_of_day'].plot.hist(bins = 24)
  plt.title('Orders per Hour of Day')
  plt.xlabel('Hour of Day')
  plt.ylabel('Orders')
  plt.ticklabel_format(style='plain', axis='y')
  </code></pre>
  <p>Thank you!</p>