<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def start_log_monitor(redis_address, logs_dir, stdout_file=None, stderr_file=None, redis_password=None):
 """Start a log monitor process. Args: redis_address (str):
 The address of the Redis instance. logs_dir (str):
 The directory of logging files. stdout_file: A file handle opened for writing to redirect stdout to. If no redirection should happen, then this should be None. stderr_file: A file handle opened for writing to redirect stderr to. If no redirection should happen, then this should be None. redis_password (str):
 The password of the redis server. Returns: ProcessInfo for the process that was started. """

    log_monitor_filepath = os.path.join(
        os.path.dirname(os.path.abspath(__file__)), "log_monitor.py")
    command = [
        sys.executable, "-u", log_monitor_filepath,
        "--redis-address={}".format(redis_address),
        "--logs-dir={}".format(logs_dir)
    ]
    if redis_password:
        command += ["--redis-password", redis_password]
    process_info = start_ray_process(
        command,
        ray_constants.PROCESS_TYPE_LOG_MONITOR,
        stdout_file=stdout_file,
        stderr_file=stderr_file)
    return process_info