from sys import argv from os.path import existsscript, from_file, to_file = argvprint "Copying from %s to %s" % (from_file, to_file)# we could do these two on one line too, how?in_file = open(from_file)indata = in_file.read()print "The input file is %d bytes long" % len(indata)print "Does the output file exist? %r" % exists(to_file)print "Ready, hit RETURN to continue, CTRL-C to abort."raw_input()out_file = open(to_file, ‘w‘)out_file.write(indata)print "Alright, all done."out_file.close()in_file.close()