title: How to filter JSON data using Python?
body: <p>How to convert JSON data from <strong>input.json</strong> to <strong>output.json</strong> using Python? In general, what data structures are used for filtering JSON data?</p>
  
  <p><strong>File: input.json</strong></p>
  
  <pre><code>[
  {
      "id":1,
      "a":22,
      "b":11
  },
  {
      "id":1,
      "e":44,
      "c":77,
      "f":55,
      "d":66
  },
  {
      "id":3,
      "b":11,
      "a":22
  },
  {
      "id":3,
      "d":44,
      "c":88
  }
  ]
  </code></pre>
  
  <p><strong>File: output.json</strong></p>
  
  <pre><code>[
  {
      "id":1,
      "a":22,
      "b":11,
      "e":44,
      "c":77,
      "f":55,
      "d":66
  },
  {
      "id":3,
      "b":11,
      "a":22,
      "d":44,
      "c":88
  }
  ]
  </code></pre>
  
  <p>Any pointers would be appreciated!</p>