title: How to remove none from pie chart in matplotlib chart?
body: <p>I'm trying to make visualization of data using pandas. Here is my code where plt is Matplotlib.</p>
  
  <pre><code>meets = results.groupby(['Meet']).size()
  meets.dropna()
  plt.figure(figsize=(14,14))
  meets.plot(kind='pie',autopct='%.2f',fontsize=20,title='Причина знакомства с Доктором',legend=True,labels=None)
  plt.show()
  </code></pre>
  
  <p>With this code i get this pie chart with none label. 
  <a href="https://i.stack.imgur.com/G8ILe.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/G8ILe.png" alt="enter image description here"></a>
  How to remove this label?</p>