Lyrics getter

lyrics.py

import urllib,re,sys;
from BeautifulSoup import BeautifulSoup
def error():
  print "Song lookup failed."
  print "It is possible that:"
  print "Song name not in correct format: artistname/songname"
  print "Example: amateurtransplants/londonunderground"
  sys.exit()
inp = str(sys.argv[1])
a = urllib.urlopen("http://www.azlyrics.com/lyrics/" + inp + ".html").read()
soup = BeautifulSoup(a)
b = soup.findAll(style="margin-left:10px;margin-right:10px;")
if str(b) == "[]":
  error()
try:
  artist = re.search(r'ArtistName = "(.*?)"', a).group(1)
except AttributeError:
  error()
title = re.search(r'SongName = "(.*?)"', a).group(1)
c = str(b).replace("[<div", "<div")
c = c.replace("</div>]", "</div>")
file = open(artist + " - " + title + ".html", "w")
file.write(c)
file.close()
print "Success. Lyrics written to " + file.name