title: reading a file with json data with python throw an error that I cannot identify
body: <p>I have the following json file named json.txt with the following data,</p>
  
  <pre><code>{"id":99903727,"nickname":"TEST_MLA_OFF","registration_date":"2010-12-03T14:19:33.000-04:00","country_id":"AR","user_type":"normal","logo":null,"points":0,"site_id":"MLA","permalink":"http://perfil.mercadolibre.com.ar/TEST_MLA_OFF","seller_reputation":{"level_id":null,"power_seller_status":null,"transactions":{"period":"12 months","total":25,"completed":25,"canceled":0,"ratings":{"positive":0,"negative":0,"neutral":1}}},"status":{"site_status":"deactive"}}
  </code></pre>
  
  <p>I obtained it using wget. I tried to load that json data with python using the following python code,</p>
  
  <pre><code>json_data = json.load('json.txt')
  data = json.load(json_data)
  json_data.close()
  
  print data
  </code></pre>
  
  <p>but that throws the following error,</p>
  
  <pre><code>Traceback (most recent call last):
    File "json-example.py", line 28, in &lt;module&gt;
      main()
    File "json-example.py", line 21, in main
      json_data = json.load('json.txt')
    File "/opt/sage-4.6.2-linux-64bit-ubuntu_8.04.4_lts-x86_64-Linux/local/lib/python/json/__init__.py", line 264, in load
      return loads(fp.read(),
  AttributeError: 'str' object has no attribute 'read'
  </code></pre>
  
  <p>I couldn't find googling what is the reason of the error.</p>
  
  <p>Best regards.</p>