title: Getting all values for a certain key in a python list of dictionaries
body: <p>I have a list in Python which contains a "nested" dictionary in it. So my list looks like follows:</p>
  
  <pre><code>List = [{'entry' : {'Name' : 'Smith', 'Age' : 25}}, {'entry' : {'Name' : 'Mary', 'Age' : 28}}]
  </code></pre>
  
  <p>I would like to return all the values of the key 'Name' from my list without using a loop. So if I use a loop it works since this works for single entries of the list. For example: <code>List[0]['entry']['Name']</code> works and returns 'Smith'. However, I need something like <code>List[:]['entry']['Name']</code> which should return a List with the entries 'Smith' and 'Mary' in it. Is this possible?</p>