#!/usr/bin/python
from bs4 import BeautifulSoup
import urllib2
import sys

if len(sys.argv) != 2:
    sys.stderr.write("Usage: urls url\n")
    sys.exit(1)

resp = urllib2.urlopen(sys.argv[1])
soup = BeautifulSoup(resp, 'html.parser')
for link in soup.find_all('a'):
    print(link.get('href'))