import sys
from subprocess import Popen, PIPE
import traceback

if __name__ == '__main__':

    if len(sys.argv) == 1:
        cmd = '%s %s %s' % (sys.executable, sys.argv[0], -1,)
        cmd = cmd.split()
        
        try:
            p = Popen(cmd, stdout=PIPE)
            p.stdout.close()
        except IOError:
            traceback.print_exc()

        try:
            p = Popen(cmd, stdout=PIPE, stdin=PIPE)
            p.stdout.close()
            p.stdin.close()
        except IOError:
            traceback.print_exc()

        try:
            p = Popen(cmd, stdout=PIPE, stdin=PIPE, stderr=PIPE)
            p.stdout.close()
            p.stdin.close()
            p.stderr.close()
        except IOError:
            traceback.print_exc()

    else:
        sys.exit(int(sys.argv[1]))