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Old 11-03-2008, 11:26 PM   #3
RoninTech
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Posts: 155
Karma: 1000036
Join Date: Oct 2008
Location: Calgary, Alberta
Device: iPod Touch, Nook Colour, Kobo Touch, Kobo Glo, Nexus 7, Nexus 5
Quote:
Originally Posted by kovidgoyal View Post
If you can outline the procedure to get the ratings, I'm happy to code it
You bet. Amazon is great about this stuff. Lets say we want the review score for a book with ISBN 0596007973. First we'll need an Amazon API developers ECS ID to make API queries. Then you just construct a URL such as:

http://ecs.amazonaws.com/onca/xml?Se...eGroup=Reviews

1CE7SK4ZPTNDQZCWBP82 is your ID key and 0596007973 is the ISBN. The rest of the URL is boilerplate.

It returns some XML. If we drill down to ItemLookupResponse->Items->Item->CustomerReviews->AverageRating we see the book got a score of 4.5.



Here's an example script that gets the rating for the above book:

Code:
import urllib2 
from xml.dom import minidom
ACCESS_KEY_ID = "1CE7SK4ZPTNDQZCWBP82"
books_isbn = "0596007973"
ecsURL = "http://ecs.amazonaws.com/onca/xml?Service=AWSECommerceService&AWSAccessKeyId="+ACCESS_KEY_ID+"&Operation=ItemLookup&ItemId="+books_isbn+"&ResponseGroup=Reviews" 
ecsNameSpace = "http://webservices.amazon.com/AWSECommerceService/2005-10-05" 
respXML = minidom.parse(urllib2.urlopen(ecsURL)) 
for items in respXML.getElementsByTagNameNS(ecsNameSpace, "Items"): 
    print items.getElementsByTagName("Item")[0].getElementsByTagName("AverageRating")[0].toxml()
Cheers,
Crazy
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