def METHOD_NAME():
    while 1:
        try:
            lock = zc.lockfile.LockFile('f.lock')
        except zc.lockfile.LockError:
            continue
        else:
            break
    f = open('f', 'r+b')
    v = int(f.readline().strip())
    time.sleep(0.01)
    v += 1
    f.seek(0)
    f.write(('%d\n' % v).encode('ASCII'))
    f.close()
    lock.close()