title: Using zip() Combining two lists into a dictionary with same keys in appand multipal values
body: <p>I have two list and i try to combining in one <code>dict</code></p>
  
  <pre><code>list1 = ['sys_time', 'sys_time', 'sys_time']
  list2 = ['2018-03-16T11:00:00.000-07:00', '2018-03-12T00:00:00.000-07:00', '2018-03-14T00:00:00.000-07:00']
  
  dict(zip(list1, list2))
  </code></pre>
  
  <p><strong>output :</strong> </p>
  
  <pre><code>{'sys_time': '2018-03-14T00:00:00.000-07:00'}
  </code></pre>
  
  <p>how to I combining same keys in appand multipal values<br>
  like that :</p>
  
  <pre><code>{'sys_time': ['2018-03-16T11:00:00.000-07:00', 2018-03-12T00:00:00.000-07:00, '2018-03-14T00:00:00.000-07:00']} 
  </code></pre>