Follow a link with Beautiful Soup

follow_link.py

import urllib
from BeautifulSoup import *

URL = raw_input("Enter the URL:") # Enter main URL
link_line = int(raw_input("Enter position:")) - 1 # The position of link relative to first link

print URL
html = urllib.urlopen(URL).read()
soup = BeautifulSoup(html)
tags = soup('a')

follow_url = tags[link_line].get("href", None)
print follow_url
inner_html = urllib.urlopen(follow_url).read()
inner_soup = BeautifulSoup(html)
# parse the table from inner_soup