title: tensorflow import images code does not work correctly
body: <p>Using <a href="https://stackoverflow.com/questions/33648322/tensorflow-image-reading-display/34985237#34985237">TensorFlow image reading &amp; display</a> </p>
  
  <p>I ran the above code which works correctly on the first run.<br>
  I have only one jpg file &lt; 1MB.<br>
  Subsequent runs just hang; any idea or input?</p>