import_video.py 文件源码

def lock_or_exit(self, lock_filename, message="process %s is already running"):
        pid = psutil.Process().pid
        if os.path.exists(lock_filename):
            with open(lock_filename) as lockfile:            
                old_pid = int(lockfile.read())
                if old_pid in psutil.pids():
                    logging.info(message % old_pid)
                    sys.exit(1)
                else:
                    os.unlink(lock_filename)