title: Find maximum value in a list of dictionaries
body: <p>Given a data structure:</p>
  
  <pre><code>   [
      {'id':0, 'items': 
        [
         {'id': 0,  name: "Tom1", age: 10}, 
         {'id': 0, name: "Mark1", age: 15}, 
         {'id': 0, name: "Pam1", age: 17}
        ]
      },
      {'id':1, 'items': 
        [
         {'id': 1,  name: "Tom12", age: 8}, 
         {'id': 1, name: "Mark12", age: 3}, 
         {'id': 1, name: "Pam12", age: 2}
        ]
      },
  
      {'id':2, 'items': 
        [
         {'id': 2,  name: "Tom13", age: 55}, 
         {'id': 2, name: "Mark13", age: 66}, 
         {'id': 2, name: "Pam13", age: 77}
        ]
      },
    ]
  </code></pre>
  
  <p>I want to find an item in each dictionary where age has maximum value and select it. How do I achieve that?</p>