Python Google Base Price Check

gbasepricing.py

import urllib, json, operator, webbrowser, uuid

class gBasePriceReport():
    
    """
    To Run Competition check leave keywords as None
    To Run A Report to find pricing we don't have, leave store_name=None
    and add keywords as a list of words expected[i.e. primeline, andersen, window]
    """
    def __init__(self, api_key, store_name=None, keywords=None, sku_file=None):
        self.api_key = api_key
        self.store_name = store_name
        self.keywords = keywords
        self.sku_file = sku_file
    
    def parse_base_result(self, g_base_json):
        #TODO: This may have more than one page of results: in r_dict.count
        try:
            json_dict = json.loads(g_base_json)
            r_dict = {"count" : json_dict['currentItemCount']}
            listings = []
            for i in json_dict['items']:
                listing = {}
                listing['title'] = i['product']['title']
                if 'description' in i['product']:
                    listing['description'] = i['product']['description']
                if 'brand' in i['product']:
                    listing['brand'] = i['product']['brand']
                #if 'gtin' in i['product']:
                    #listing['gtin'] = i['product']['gtin']
                listing['store'] = i['product']['author']['name']
                if "images" in i['product']:
                    listing['image'] = i['product']['images'][0]['link']
                listing['price'] = i['product']['inventories'][0]['price']
                listings.append(listing)
            r_dict['listings'] = listings
            return r_dict
        except Exception as e:
            print "Error:",e
            try:
                return json_dict
            except:
                return None
    
    def query_google_base(self, base_query):
        try:
            params = urllib.urlencode({'key': self.api_key, 
                                               'country': "US",
                                               'q': base_query,
                                               'alt': "json"})            
            f = urllib.urlopen("https://www.googleapis.com/shopping/search/v1/public/products?%s" % params)
            return f.read()
        except:
            return "Error"
            
    def batch_process_sku_file(self):
        for line in open(self.sku_file, 'r'):
            query = line.strip().replace('"', '')
            yield query, self.parse_base_result(self.query_google_base(self.api_key, query))
            
    def filter_to_competition(self, result):
        if 'listings' in result:
            for l in result['listings']:
                if l['store'] == self.store_name:
                    return result['listings']
            
    def filter_by_keywords(self, result):
        if 'listings' in result:
            for l in result['listings']:
                print l
                for k in self.keywords:
                    if k in l['title']:
                        return result['listings']
                    if 'description' in l:
                        if k in l['description']:
                            return result['listings']
    
    def filter_each_by_keywords(self, result):
        if result != None:
            if 'listings' in result:
                for l in result['listings']:
                    #print l
                    for k in self.keywords:
                        if k in l['title']:
                            yield l
                        if 'description' in l:
                            if k in l['description']:
                                yield l