title: python - parse encoded json file - Expecting property name enclosed in double quotes
body: <p>One json file that I need to parse seems to be encoded and the code fails with the error:
  <strong><em>ValueError</strong>: Expecting property name enclosed in double quotes: line 2 column 3 (char 4)</em></p>
  
  <p>My question are, how to I convert/load the json? 
  Single-quotes or double-quotes in the json makes a difference? 
  Is a good solution to find/replace single to double quotes and the Unicode character <code>u</code> in order to parse the json?</p>
  
  <p><strong>json:</strong></p>
  
  <pre><code>  {
        'data': [
            {'ad_id': u'372900', 'adset_id': u'72900', 'campaign_id': u'363200', 'created_time': u'2016-03-08'},
            {'ad_id': u'372900', 'adset_id': u'72900', 'campaign_id': u'363200', 'created_time': u'2016-03-08'}
      ]
    }
  </code></pre>
  
  <p>code snipet:</p>
  
  <pre><code>import json
  import pprint
  with open('leads.json') as data_file:
         data = json.load(data_file)
  pprint(data)
  </code></pre>