title: How to assign a string value as an empty dictionary in Python?
body: <p>How can I assign a string value as an empty dictionary in Python? For example, </p>
  
  <pre><code>print hdr  
  AB_1_15_Oct_2015  
  hdr = {}  
  hdr  
  {}  
  </code></pre>
  
  <p>But I want <code>AB_1_15_Oct_2015</code> to be an empty dictionary.</p>