Multithreading Python3多线程，线程返回不并行运行

我正在尝试运行以下线程代码

import Queue
import threading

def get_items(url):
    print(url)
    #Do some stuff with print here
    return url.split()

q = Queue.Queue()
urls = [LIST OF URLS]

for u in urls[:10]:
    t = threading.Thread(target=get_items, args=(q, u))
    t.daemon = True
    t.start()
    t.join()

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这应该并行运行线程，但它是按顺序运行的。其次，如何将线程的return语句的值附加到列表中。

当我对代码进行以下更改时，代码成功运行

import Queue
import threading

def get_items(q, url):
    print(url)
    #Do some stuff with print here
    q.put(url.split())

q = Queue.Queue()
urls = [LIST OF URLS]

for u in urls[:10]:
    t = threading.Thread(target=get_items, args=(q, u))
    t.daemon = True
    t.start()
    th.append(t)

for t in th:
    t.join()

print(q.get())