title: python pyplot annotations
body: <p>I am currently using the following code to plot a graph using python pyplot:</p>
  
  <pre><code>  plt.plot([row[2] for row in data],[row[1] for row in data], type, marker='o', label=name)  
  </code></pre>
  
  <p>However, instead of the default marker of <code>'o'</code> I want the marker at the points to be the data in <code>row[1]</code></p>
  
  <p>Can someone explain how to do this?</p>