title: Python Change data structure from report
body: <p>I have the data like this:</p>
  
  <pre><code>data = {
  'impressions': {'20190513': '50922', '20190514': '62343', '20190515': '34866'},
  'clicks': {'20190513': '25', '20190514': '28', '20190515': '12'}}
  </code></pre>
  
  <p>but confused to change the structure like this:</p>
  
  <pre><code>[{
      'date': '20190513',
      'impressions': '50922',
      'clicks': '25',
  },
  {
      'date': '20190514',
      'impressions': '62343',
      'clicks': '28',
  },
  {
      'date': '20190515',
      'impressions': '34866',
      'clicks': '12',
  }]
  </code></pre>
  
  <p>I have tried several times but failed. Help me please. Thank's...</p>