title: dictionary add values for the same keys
body: <p>I have a list of dictionary:</p>
  
  <pre><code>[{'name':'Jay', 'value':'1'},{'name':'roc', 'value':'9'},{'name':'Jay', 'value':'7'},{'name':'roc', 'value':'2'}]
  </code></pre>
  
  <p>I want it to be:</p>
  
  <pre><code>[{'name':'Jay', 'value':'8'},{'name':'roc', 'value':'11'}]
  </code></pre>
  
  <p>I tried looping through but I am not able to find an example where I can do this. Any hint or idea will be appreciated.</p>