title: ValueError: malformed string using ast.literal_eval
body: <p>I'm doing a loop to get json api, here is what I have in my loop:</p>
  
  <pre><code>response_item = requests.request('GET',url_item,params=None,verify=False)
  response_item = json.loads(response_item.text)
  response_item = ast.literal_eval(json.dumps(response_item, ensure_ascii=False).encode('utf8'))
  </code></pre>
  
  <p>I scan around 45000 json objects, I generate "url_item" variable for each iteration. Each object is the same, I can get something like 7000 object and I have the following error when I reach the 7064th:</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:\Python27\tools\api_item.py", line 47, in &lt;module&gt;
      response_item = ast.literal_eval(json.dumps(response_item, ensure_ascii=False).encode('utf8'))
    File "C:\Python27\lib\ast.py", line 80, in literal_eval
      return _convert(node_or_string)
    File "C:\Python27\lib\ast.py", line 63, in _convert
      in zip(node.keys, node.values))
    File "C:\Python27\lib\ast.py", line 62, in &lt;genexpr&gt;
      return dict((_convert(k), _convert(v)) for k, v
    File "C:\Python27\lib\ast.py", line 63, in _convert
      in zip(node.keys, node.values))
    File "C:\Python27\lib\ast.py", line 62, in &lt;genexpr&gt;
      return dict((_convert(k), _convert(v)) for k, v
    File "C:\Python27\lib\ast.py", line 79, in _convert
      raise ValueError('malformed string')
  ValueError: malformed string
  </code></pre>
  
  <p>I used to print the second and third "response_item". Of course in this case the third one isn't displayed since I have the error just before, here what I have for the print after the json.load:</p>
  
  <pre><code>{u'restrictions': [], u'name': u'Sac \xe0 dos de base', u'level': 0, u'rarity': u'Basic', u'vendor_value': 11, u'details': {u'no_sell_or_sort': False, u'size': 20}, u'game_types': [u'Activity', u'Wvw', u'Dungeon', u'Pve'], u'flags': [u'NoSell', u'SoulbindOnAcquire', u'SoulBindOnUse'], u'icon': u'https://render.guildwars2.com/file/80E36806385691D4C0910817EF2A6C2006AEE353/61755.png', u'type': u'Bag', u'id': 8932, u'description': u'Un sac de 20 emplacements pour les personnages d\xe9butants.'}
  </code></pre>
  
  <p>Every item I get before this one has the same type, same format, and I don't have any error except for the 7064th !</p>
  
  <p>Thank you for your help!</p>