title: Python: Extract Attribute within JSON data structure
body: <p>I am currently parsing eBay data using eBay public API, I have figured out the way to parse the JSON structure except for some JSON elements.</p>
  
  <p>Here is the JSON structure that I am looking at:</p>
  
  <pre><code>  {u'itemId': [u'370640300983'], u'isMultiVariationListing': [u'false'], u'globalId': [u'EBAY-US'], u'title': [u'DELL Latitude D630 Core 2 Duo 2GHz 1GB 80GB CD-RW/DVD WiFi Notebook 14" Laptop'], u'country': [u'US'], u'shippingInfo': [{u'expeditedShipping': [u'true'], u'shippingType': [u'Calculated'], u'handlingTime': [u'1'], u'shipToLocations': [u'US'], u'oneDayShippingAvailable': [u'false']}], u'galleryURL': [u'http://thumbs4.ebaystatic.com/pict/3706403009834040_1.jpg'], u'autoPay': [u'false'], u'location': [u'Saint Paul,MN,USA'], u'postalCode': [u'55114'], u'returnsAccepted': [u'true'], u'viewItemURL': [u'http://www.ebay.com/itm/DELL-Latitude-D630-Core-2-Duo-2GHz-1GB-80GB-CD-RW-DVD-WiFi-Notebook-14-Laptop-/370640300983?pt=Laptops_Nov05'], u'sellingStatus': [{u'currentPrice': [{u'@currencyId': u'USD', u'__value__': u'99.99'}], u'timeLeft': [u'P0DT0H13M10S'], u'convertedCurrentPrice': [{u'@currencyId': u'USD', u'__value__': u'99.99'}], u'bidCount': [u'4'], u'sellingState': [u'Active']}], u'paymentMethod': [u'PayPal', u'VisaMC', u'Discover'], u'primaryCategory': [{u'categoryId': [u'177'], u'categoryName': [u'PC Laptops &amp; Netbooks']}], u'condition': [{u'conditionId': [u'3000'], u'conditionDisplayName': [u'Used']}], u'listingInfo': [{u'listingType': [u'Auction'], u'gift': [u'false'], u'bestOfferEnabled': [u'false'], u'startTime': [u'2012-08-15T23:28:05.000Z'], u'buyItNowAvailable': [u'false'], u'endTime': [u'2012-08-20T23:28:05.000Z']}]}
  </code></pre>
  
  <p>Data that I am currently parsing</p>
  
  <pre><code>370640300983
  DELL Latitude D630 Core 2 Duo 2GHz 1GB 80GB CD-RW/DVD WiFi Notebook 14" Laptop
  {u'@currencyId': u'USD', u'__value__': u'99.99'}
  </code></pre>
  
  <p>Second Element:</p>
  
  <pre><code>{u'itemId': [u'170892723100'], u'isMultiVariationListing': [u'false'], u'globalId': [u'EBAY-US'], u'title': [u'Dell Latitude D620 Laptop Core 2 Duo 2GHz  1GB Ram No HDD INCOMPLETE'], u'country': [u'US'], u'shippingInfo': [{u'expeditedShipping': [u'false'], u'handlingTime': [u'1'], u'shippingServiceCost': [{u'@currencyId': u'USD', u'__value__': u'24.0'}], u'oneDayShippingAvailable': [u'false'], u'shipToLocations': [u'US'], u'shippingType': [u'Flat']}], u'galleryURL': [u'http://thumbs1.ebaystatic.com/pict/1708927231004040_1.jpg'], u'autoPay': [u'false'], u'location': [u'Hughesville,PA,USA'], u'postalCode': [u'17737'], u'returnsAccepted': [u'true'], u'viewItemURL': [u'http://www.ebay.com/itm/Dell-Latitude-D620-Laptop-Core-2-Duo-2GHz-1GB-Ram-No-HDD-INCOMPLETE-/170892723100?pt=Laptops_Nov05'], u'sellingStatus': [{u'currentPrice': [{u'@currencyId': u'USD', u'__value__': u'20.01'}], u'timeLeft': [u'P0DT1H10M35S'], u'convertedCurrentPrice': [{u'@currencyId': u'USD', u'__value__': u'20.01'}], u'bidCount': [u'2'], u'sellingState': [u'Active']}], u'paymentMethod': [u'PayPal'], u'primaryCategory': [{u'categoryId': [u'177'], u'categoryName': [u'PC Laptops &amp; Netbooks']}], u'condition': [{u'conditionId': [u'3000'], u'conditionDisplayName': [u'Used']}], u'listingInfo': [{u'listingType': [u'Auction'], u'gift': [u'false'], u'bestOfferEnabled': [u'false'], u'startTime': [u'2012-08-18T00:25:30.000Z'], u'buyItNowAvailable': [u'false'], u'endTime': [u'2012-08-21T00:25:30.000Z']}]}
  </code></pre>
  
  <p>Parsed elements of the second element:</p>
  
  <pre><code>170892723100
  Dell Latitude D620 Laptop Core 2 Duo 2GHz  1GB Ram No HDD INCOMPLETE
  {u'@currencyId': u'USD', u'__value__': u'20.01'}
  </code></pre>
  
  <p>If you see In both iteration of my code I am unable to get the u'<strong>value</strong>: element parse and get the actual price extract from the data structure:</p>
  
  <p>Basically instead of <code>{u'@currencyId': u'USD', u'__value__': u'20.01'}</code> I would like to get <code>20.01</code> as the parsed value. Should I be using regular expression to parse it or is there a better way to do it?</p>
  
  <pre><code>Here is my code:
    data = json.load(urllib2.urlopen(url))
    #print data
    for item in data['findItemsByKeywordsResponse'][0]['searchResult'][0]['item']:
      print item
      for itemId in item['itemId']:
        print itemId
      for title in item['title']:
        print title
      for price in item['sellingStatus'][0]['currentPrice']:
        print price
      print '\n'
  </code></pre>