title: How can I parse json array in python?
body: <pre><code>[
      {
          "key": "abc123",
          "columns": [
              [
                  "2015-08-05 12\\:38\\:02+0000:",
                  "",
                  1439565881058000
              ],
              [
                  "2015-08-05 12\\:38\\:02+0000:type",
                  "1",
                  1439565881058000
              ],
              [
                  "2015-08-05 12\\:38\\:02+0000:duration",
                  "21",
                  1439565881058000
              ],
              [
                  "2015-08-05 12\\:38\\:02+0000:first_name",
                  "abc",
                  1439565881058000
              ],
              [
                  "2015-08-05 12\\:38\\:02+0000:last_name",
                  "xyz",
                  1439565881058000
              ],
              [
                  "2015-08-05 12\\:38\\:02+0000:number",
                  "012456789",
                  1439565881058000
              ]
          ]
      }
  ]
  </code></pre>