title: generating multiple plots for multiple columns
body: <p>recently I watched Pydata 2019 video and I came upon Pandas tutorial
  <a href="https://www.youtube.com/watch?v=8upGdZMlkYM&amp;list=PLGVZCDnMOq0oywykwgVAcGvsGzagyMbwS" rel="nofollow noreferrer">https://www.youtube.com/watch?v=8upGdZMlkYM&amp;list=PLGVZCDnMOq0oywykwgVAcGvsGzagyMbwS</a></p>
  
  <p>in 23:40 there are three plots for multiple columns but when I plot it, it plots everything in one plot</p>
  
  <p>Am I missing one argument?</p>