title: changing x label in python
body: <p>I am new to python so I apologize if this if this will sound like a silly question.
  I am trying to change a the title of the x axis in a plot ,from what I read if you use subplots the you need to use <code>set_xlabel('X Axis')</code> command but for some reason this is not working for me.</p>
  
  <pre><code>plot=plt.subplots();
  dftemp=dftemp.set_index('Date2');
  plot=dftemp['yield_bruto_percent'].plot(kind='bar',color="lightgray",title=dftemp['paper_name'][1][::-1]+'    ינוציח-ימינפ גוריד ',figsize=(8,4),legend=True)
  plot=dftemp['dirug_mnpik_psagot'].plot(secondary_y=True,legend=True);
  plot=dftemp['final_score'].plot(secondary_y=True,legend=True);
  plot=dftemp['dirug_manpik_hitzoni'].plot(secondary_y=True,legend=True,rot=45);
  plot.set_xlabel('X Axis')
  </code></pre>
  
  <p>when I run this code the label does not change and the label appears as the name of variable which is the index in my data set.
  This is the message i get</p>
  
  <pre><code>&lt;matplotlib.text.Text at 0x23735e70390&gt;
  </code></pre>
  
  <p>any suggestions would be highly appreciated.  </p>