Python Lock与RLock

Question

我知道RLock在发布之前可以多次被收购。我的问题是在以下情况下，我可以使用多个锁而不是使用RLock。我跑了它，它按照我的期望工作正常。

import threading

##declare two locks, is that good way to do like this or using RLock
outer_lock = threading.Lock()
lock = threading.Lock()
t = []

def get_first_part():
    lock.acquire()
    global t
    try:
        t.append('first')
    finally:
        lock.release()
    return t

def get_second_part():
    lock.acquire()
    global t
    try:
        t.append('second')
    finally:
        lock.release()
    return t


def get_both_part():
    outer_lock.acquire()
    try:
        first = get_first_part()
        second = get_second_part()
    finally:
        outer_lock.release()
    return first, second

t1 = threading.Thread(target=get_both_part)
t2 = threading.Thread(target=get_both_part)

t1.start()
t2.start()
t1.join()
t2.join()