title: Plotting multiple graphs from a single dataframe
body: <p>I have a pandas dataframe <code>A</code>,<code>B</code>, and <code>pos</code>and want to plot <code>A</code> versus <code>B</code> but in such a way that a distinct graph is generated for each value of <code>pos</code>.</p>
  <p>Meaning a single figure but a graph for all <code>pos = 1</code>, one for <code>pos = 2</code> and so on</p>
  <p>The dataframe is structured like this:</p>
  <pre><code>      A   B    pos 
  
  1     6   2     1
  2     2   10    2
  3     1   3     4
  4     8   1     1
  5     6   1     1
   
  </code></pre>
  <p>How do I do that? Any help is appreciated.</p>