Subversion Repositories SmartDukaan

from BeautifulSoup import BeautifulSoup, NavigableString

from dtr.utils.utils import fetchResponseUsingProxy

import re

import sys

invalid_tags = ['b', 'i', 'u']

bestSellers = []

def strip_tags(html, invalid_tags):

    soup = BeautifulSoup(html,convertEntities=BeautifulSoup.HTML_ENTITIES)

    for tag in soup.findAll(True):

        if tag.name in invalid_tags:

            s = ""

            for c in tag.contents:

                if not isinstance(c, NavigableString):

                    c = strip_tags(unicode(c), invalid_tags)

                s += unicode(c)

            tag.replaceWith(s)

    return soup

class AmazonScraper:

    def __init__(self):

        self.count_trials = 0

    def read(self, url):

        response_data = ""

        try:

            response_data = fetchResponseUsingProxy(url)

        except Exception as e:

            print 'ERROR: ', e

            print 'Retrying'

            self.count_trials += 1

            if self.count_trials < 5:

                return self.read(url)

        self.response_data=response_data

        if "Server Busy" in self.response_data:

            print "Server busy...Ahhhhh"

            self.count_trials += 1

            return self.read(url)

        return self.createData()

    def createData(self):

        self.soup = strip_tags(self.response_data,invalid_tags)

        self.response_data =None

        return self.scrape(self.soup)

    def scrape(self,soup):

        sellerData = soup.findAll("div" , {"class" : "a-row a-spacing-mini olpOffer"})

        for data in sellerData:

            print "sellerData****"

            price = data.find('span', attrs={'class' : re.compile('.*olpOfferPrice*')}).find('span').text

            print "Unit cost= ",float(price.replace("Rs.","").replace(",",""))

            unitCost = float(price.replace("Rs.","").replace(",",""))

            shippingCost = data.find('p', attrs={'class' : re.compile('.*olpShippingInfo*')}).find('span').text

            if "FREE" in shippingCost:

                print "shippingCost=0"

                shippingCost = 0

            else:

                try:

                    print "shippingCost= ",float(shippingCost.replace("+Rs.","").replace("Delivery","").replace(",",""))

                    shippingCost = float(shippingCost.replace("+Rs.","").replace("Delivery","").replace(",",""))

                except:

                    shippingCost = 0.0

            try:

                return (unitCost + shippingCost)

            except:

                return  unitCost

if __name__ == '__main__':

    scraper = AmazonScraper()

    print scraper.read('http://www.amazon.in/gp/offer-listing/B00UFPHX8M')