python code to scrape ebay historical auction results

ebay_scraper.py

import csv
import requests
import bs4
import argparse

# parser = argparse.ArgumentParser(description='Process a list of search terms.')
# parser.add_argument('terms', metavar='N', type=str, nargs='+',
#                    help='comma separated list of terms to search for')

# args = parser.parse_args()
# print args.accumulate(args.terms)

# enter multiple phrases separated by '',
phrases =['nixon autograph']


for phrase in phrases:
	site = 'http://www.ebay.com/sch/i.html?_from=R40&_nkw='+phrase+'&_in_kw=1&_ex_kw=&_sacat=0&LH_Sold=1&_udlo=&_udhi=&LH_Auction=1&_samilow=&_samihi=&_sadis=15&_stpos=90278-4805&_sargn=-1%26saslc%3D1&_salic=1&_sop=13&_dmd=1&_ipg=200&LH_Complete=1'
	res = requests.get(site)
	res.raise_for_status()
	soup = bs4.BeautifulSoup(res.text, "lxml")

  
    # grab the date/time stamp of each auction listing
	dte = [e.span.contents[0].split(' ')[0] for e in soup.find_all(class_="tme")]

   	# grab all the links and store its href destinations in a list
	titles = [e.contents[0] for e in soup.find_all(class_="vip")]
        
	# grab all the links and store its href destinations in a list
	links = [e['href'] for e in soup.find_all(class_="vip")]

	# grab all the bid spans and split its contents in order to get the number only
	bids = [e.span.contents[0].split(' ')[0] for e in soup.find_all("li", "lvformat")]

	# grab all the prices and store those in a list
	prices = [e.contents[0] for e in soup.find_all("span", "bold bidsold")]

	# zip each entry out of the lists we generated before in order to combine the entries
	# belonging to each other and write the zipped elements to a list
	l = [e for e in zip(dte, titles, links, prices, bids)]

	# write each entry of the rowlist `l` to the csv output file
	with open('%s.csv' % phrase, 'wb') as csvfile:
	    w = csv.writer(csvfile)
	    for e in l:
	        w.writerow(e)

Did you ever run into the issue of the web scraper, scraping data twice? I am currently trying to figure out what is going wrong with my code.