<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _initialize_session():
 # type: () -> None """ Generate a new session key and store it to thread local storage. """

    sys_random = random.SystemRandom()
    _thread_local_storage.secret_key = b''.join(
        int2byte(sys_random.randint(0, 255))
        for _ in range(SECRET_KEY_BITS // 8))