from os import getcwd, startfile
from shutil import make_archive

if not (getcwd().endswith("Call of Duty 4")): #Covers both CD and Steam paths
    print "Place this file in the Call of Duty 4 root-directory"
    raise SystemExit
#Backup
make_archive("backup-players","zip","players")
#Start
startfile("iw3mp.exe")