html_parser = HTMLParser()

soup = BeautifulSoup(urlopen("http://www.amazon.com/gp/bestsellers/").read())

categories = []

# Scrape list of category names and urls

for category_li in soup.find(attrs={'id':'zg_browseRoot'}).find('ul').findAll('li'):

category = {}

category['name'] = html_parser.unescape(category_li.a.string)

category['url'] = category_li.a['href']

categories.append(category)

del soup

# Loop through categories and print out each product's name, rank, and url.

for category in categories:

print category['name']

print '-'*50

soup = BeautifulSoup(urlopen(category['url']))

i = 1

for title_div in soup.findAll(attrs={'class':'zg_title'}):

if i ==1:

print "%d. %s\n %s" % (i, html_parser.unescape(title_div.a.string), title_div.a['href'].strip())

i += 1