title: Subplot formatting Pandas
body: <p>I have a pivot dataframe (date, price,stock) I would like to create multiple boxes (one for each stock) and to plot the price evolution (using line).</p>
  <pre><code>import matplotlib.pyplot as plt
  #plt.style.use('default')
  df.plot(subplots = True, figsize = (15, 15));
  plt.grid(True) 
  plt.legend(loc = 'best')
  plt.xlabel('Date')
  plt.ylabel('Stock')
  plt.show()
  </code></pre>
  <p>This is the code I have 5 boxes with 5 lines (one for each stock) but for example the grid argument is applied only to the last subplot not to the previous ones. Also I would like to format the yticks as million or thousand. Any idea please ?</p>
  <p>Thanks !</p>