Remove URLs from text file python

# remove any instance of a url (the below code doesn't work)
#
#import re
#
#URL_LIST = []
#infile = open('starter_pack_2','r').readlines()
#outfile = open('output','w+')
#
#get = re.compile('HTTP:\/\/\S*',re.IGNORECASE|re.DOTALL)
#
#for line in infile:
#    try:
#        got = get.search(line)
#        URL = got.group()
#        URL_LIST.append(URL)
#    except Exception,e:print e
#
#
#
#for line in infile:
#     for URL in URL_LIST:
#         if URL in line:
#             outfile.write(line.replace(URL,""))
#             break
#     else:
#         outfile.write(line)
#         break
#
#outfile.close()
#
#
############## and after asking in stackoverflow ################
##
#basically your code should look like:
#
#with open(...) as infile:
#    for line in infile:
#         # do a regex substitution to remove the URL
#@jmunsch pastebin.com/0qgTHvDS
#I did not test it and it's 4am code
#but basically the idea is there
#you parse the file **once**, you substitute every URL given the URL regex, stolen from here: stackoverflow.com/questions/…
#and voila \o/

#and do not do infile = open('starter_pack_2','r').readlines() and then for line in infile
#but:
#
#with open(...) as infile:
#for line in infile:
#
#then you should use context managers, i.e. with open() as
#
#
#well, your url regex is wrong
#you should look 'url regex' in SO
##
## http://stackoverflow.com/users/1290438/zmo
# remove any instance of a url
##########################################################################3

import re

URL_LIST = []
infile = open('starter_pack_2','r')
outfile = open('output','w+')

get = re.compile('http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+',re.IGNORECASE|re.DOTALL)

for line in infile:
    outfile.write(get.sub('', line))

outfile.close()