title: Removing Duplicates From Dictionary
body: <p>I have the following Python 2.7 dictionary data structure (I do not control source data - comes from another system as is):</p>
  
  <pre>
  {112762853378: 
     {'dst': ['10.121.4.136'], 
      'src': ['1.2.3.4'], 
      'alias': ['www.example.com']
     },
   112762853385: 
     {'dst': ['10.121.4.136'], 
      'src': ['1.2.3.4'], 
      'alias': ['www.example.com']
     },
   112760496444: 
     {'dst': ['10.121.4.136'], 
      'src': ['1.2.3.4']
     },
   112760496502: 
     {'dst': ['10.122.195.34'], 
      'src': ['4.3.2.1']
     },
   112765083670: ...
  }
  </pre>
  
  <p>The dictionary keys will always be unique.  Dst, src, and alias can be duplicates.  All records will always have a dst and src but not every record will necessarily have an alias as seen in the third record.</p>
  
  <p>In the sample data either of the first two records would be removed (doesn't matter to me which one).  The third record would be considered unique since although dst and src are the same it is missing alias.</p>
  
  <p>My goal is to remove all records where the dst, src, and alias have all been duplicated - regardless of the key.</p>
  
  <p>How does this <em>rookie</em> accomplish this?</p>
  
  <p>Also, my limited understanding of Python interprets the data structure as a dictionary with the values stored in dictionaries... a dict of dicts, is this correct?</p>