title: python determine json attributes
body: <p>I want to determine each attribut in a JSON format where i have no idea about the content of the JSON file.</p>
  
  <p>For example i have these different files contenent:</p>
  
  <pre><code>[
  {
      "name": "abc",
      "hobby": "swimming"
  },
  {
      "name": "xyz",
      "hobby": "programming"
  }
  ]
  </code></pre>
  
  <p>and the second example:</p>
  
  <pre><code>[
  {
      "street": "PL EDOUARD BOUILLIERE",
      "nb_places_totales": 249
  },
  {
      "street": "CHE DU VERDON",
      "nb_places_totales": 212
  }
  ]
  </code></pre>
  
  <p>How can i parse and determine the attribut name using python?</p>