title: Replace object in json with another json file using python
body: <p>I currently have two json files that I need to combine using python. Essentially I want to replace the choices array in file 1 with the array in file 2 using python. How do I go about doing this?
  File 1 is: </p>
  
  <pre><code>{
      "choice_list": {
          "name": "Boston Street Names",
          "choices":[ {"value": "127906", "label": "DAVIS STREET"},
                      {"value": "129909", "label": "NORTH QUINCY STREET" },
                      { "value": "134194", "label": "ADAMS STREET" }] 
       } 
  }
  </code></pre>
  
  <p>File 2 is: </p>
  
  <pre><code>[{"value": "134484", "label": "PRISCILLA ALDEN ROAD"},
   {"value": "134487", "label": "VAN BUREN DRIVE"}]
  </code></pre>