title: Python matplotlib.pyplot pie charts: How to remove the label on the left side?
body: <p>I plot a piechart using pyplot.</p>
  
  <pre><code>import pylab
  import pandas as pd
  test = pd.Series(['male', 'male', 'male', 'male', 'female'], name="Sex")
  test = test.astype("category")
  groups = test.groupby([test]).agg(len)
  groups.plot(kind='pie', shadow=True)
  pylab.show()
  </code></pre>
  
  <p>The result:</p>
  
  <p><a href="https://i.stack.imgur.com/RzvfT.png" rel="noreferrer"><img src="https://i.stack.imgur.com/RzvfT.png" alt="enter image description here"></a></p>
  
  <p>However, I'm unable to remove the label on the left (marked red in the picture). I already tried</p>
  
  <pre><code>plt.axes().set_xlabel('')
  </code></pre>
  
  <p>and</p>
  
  <pre><code>plt.axes().set_ylabel('')
  </code></pre>
  
  <p>but that did not work.</p>