title: Can I have a dictionary with same-name keys?
body: <p>I need to have a dictionary which might have same names for some keys and return a list of values when referencing the key in that case.</p>
  
  <p>For example</p>
  
  <pre><code>print mydict['key']
  [1,2,3,4,5,6]
  </code></pre>