amazon-scraper.py

from lxml import html  
import csv,os,json
import requests
import sys
from exceptions import ValueError
from time import sleep
 
def parse(url):
    headers = {'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36'}
    page = requests.get(url,headers=headers)
    for i in range(20):
        # sleep(3)
        try:
            doc = html.fromstring(page.content)
            XPATH_NAME = '//h1[@id="title"]//text()'
            XPATH_SALE_PRICE = '//span[contains(@id,"ourprice") or contains(@id,"saleprice")]/text()'
            XPATH_ORIGINAL_PRICE = '//td[contains(text(),"List Price") or contains(text(),"M.R.P") or contains(text(),"Price")]/following-sibling::td/text()'
            XPATH_CATEGORY = '//a[@class="a-link-normal a-color-tertiary"]//text()'
            XPATH_AVAILABILITY = '//div[@id="availibility"]//text() or span[contains(@class,"a-size-medium a-color-price")]//text()'
            XPATH_DESCRIPTION = '//div[@id="productDescription"]//text()'
 
            RAW_NAME = doc.xpath(XPATH_NAME)
            RAW_SALE_PRICE = doc.xpath(XPATH_SALE_PRICE)
            RAW_CATEGORY = doc.xpath(XPATH_CATEGORY)
            RAW_ORIGINAL_PRICE = doc.xpath(XPATH_ORIGINAL_PRICE)
            RAw_AVAILABILITY = doc.xpath(XPATH_AVAILABILITY)
            RAw_DESCRIPTION = doc.xpath(XPATH_DESCRIPTION)
 
            NAME = ' '.join(''.join(RAW_NAME).split()) if RAW_NAME else None
            SALE_PRICE = ' '.join(''.join(RAW_SALE_PRICE).split()).strip() if RAW_SALE_PRICE else None
            CATEGORY = ' > '.join([i.strip() for i in RAW_CATEGORY]) if RAW_CATEGORY else None
            ORIGINAL_PRICE = ''.join(RAW_ORIGINAL_PRICE).strip() if RAW_ORIGINAL_PRICE else None
            AVAILABILITY = ''.join(RAw_AVAILABILITY).strip() if RAw_AVAILABILITY else None
            DESCRIPTION = ''.join(RAw_DESCRIPTION).strip() if RAw_DESCRIPTION else None
 
            if not ORIGINAL_PRICE:
                ORIGINAL_PRICE = SALE_PRICE
            #retrying in case of caotcha
            if not NAME :
                raise ValueError('captcha')

            data = {
                    'NAME':NAME,
                    'SALE_PRICE':SALE_PRICE,
                    'CATEGORY':CATEGORY,
                    'ORIGINAL_PRICE':ORIGINAL_PRICE,
                    'AVAILABILITY':AVAILABILITY,
                    'DESCRIPTION' :DESCRIPTION,
                    'URL':url,
                    }
 
            return data
        except Exception as e:
            print e
 
def ReadAsin():
    # AsinList = csv.DictReader(open(os.path.join(os.path.dirname(__file__),"Asinfeed.csv")))
    zm = sys.argv[2]
    AsinList = [zm]
    extracted_data = []
    for i in AsinList:
        url = "https://www.amazon.com/dp/"+i
        print "Processing: "+url
        extracted_data.append(parse(url))
        # sleep(5)
    f=open('data.json','w')
    json.dump(extracted_data,f,indent=4)
 
 
if __name__ == "__main__":
    ReadAsin()