title: using an Image as a key
body: <p>Is it possible to use an Image as a key in a dict in Python? </p>
  
  <pre><code>answer_List = {One : 1, Two : 2, Three :3, Four : 4, Five : 5, Six : 6}
  </code></pre>
  
  <p>where 1-6 are png files. I am new to python and I keep reading that it is super flexible and anything can be stored in and as anything. Yet I am getting an error</p>
  
  <blockquote>
    <p>TypeError: unhashable type: 'PngImageFile'</p>
  </blockquote>
  
  <p>thanks.</p>