title: 10 Minutes to Pandas tutorial - to_numpy() does not exist?
body: <p>Following: <a href="https://pandas.pydata.org/pandas-docs/stable/getting_started/10min.html" rel="noreferrer">https://pandas.pydata.org/pandas-docs/stable/getting_started/10min.html</a> 
  This - df.to_numpy() throws an AttributeError: 'DataFrame' object has no attribute 'to_numpy'</p>
  
  <p>Not sure why. </p>