PDF downloader

pdf_spidey

import urllib2
import sys
import os
from subprocess import call

try:
	url = sys.argv[1]
	k= urllib2.urlopen(url).readlines()
	file_name= "random_file.txt"
	op= open(file_name,'w')
	for i in k:
	    if '<a' in i and '.pdf' in i:
	        pos_i= i.find('\"')
	        pos_j= i.find('\"',pos_i+1)
	        op.write(i[pos_i+1:pos_j]+'\n')
	op.close()
	call(["wget","-i",file_name])
	os.remove(file_name)

except:
	print "Error in connection. Please check URL again. "