title: Error in Python Code when plotting in Seaborn
body: <p>I am trying to plot distribution graph in python using <code>seaborn</code> . But I am getting error which I am not able to solve given below. </p>
  
  <p>Code: </p>
  
  <p><code>sns.distplot(df['nn'])</code></p>
  
  <p>Error: </p>
  
  <p><code>cannot convert float NaN to integer</code></p>
  
  <p>Is there any efficient way to solve this by plotting histogram and the distribution?</p>