title: Dict from list of dicts
body: <p>I have a list of dicts. </p>
  
  <pre><code>dictList = [
    {'name': 'some name'},
    {'name': 'some other name'},
    {'age': 'some age'},
    {'last_name': 'some last name'}
  ]
  </code></pre>
  
  <p>In that list of dicts each dict has one key and one value for that key, as shown above. </p>
  
  <p>I need to create a dict that has the keys from all the dicts and each value for every key is a set with item values from the list of dicts. In the example, it'd be something like this:</p>
  
  <pre><code>expected_dict = {
      'name': ['some name', 'some other name'],
      'age': ['some age'],
      'last_name': ['some last name']
  }
  </code></pre>
  
  <p>How can I do this in Python?</p>