title: How to check if pandas Series is empty?
body: <p>How to check if pandas Series is empty?</p>
  
  <p>I have tried this:</p>
  
  <p><a href="https://stackoverflow.com/questions/19828822/how-to-check-whether-a-pandas-dataframe-is-empty">How to check whether a pandas DataFrame is empty?</a></p>
  
  <p>but it seems that Series has no property 'isempty'.</p>