With the help of Queue module we can create a new queue object that can hold a specific number of items and threads. Queue module have following method which is given below.
get(): The get() removes and returns an item from the queue.
put(): The put adds item to a queue.
qsize() : The qsize() returns the number of items that are currently in the queue.
empty(): The empty( ) returns True if queue is empty; otherwise, False.
full(): the full() returns True if queue is full; otherwise, False.
And example of all method is given below-

#!/usr/bin/python

import Queue
import threading
import time

exitFlag = 0

class myThread (threading.Thread):
    def __init__(self, threadID, name, q):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.name = name
        self.q = q
    def run(self):
        print "Starting " + self.test
        process_data(self.test, self.q)
        print "Exiting " + self.test

def process_data(threadName, q):
    while not exitFlag:
        queueLock.acquire()
        if not workQueue.empty():
            data = q.get()
            queueLock.release()
            print "%s processing %s" % (threadtest, data)
        else:
            queueLock.release()
        time.sleep(1)

threadList = ["Demo-1", "Demo-2", "Demo-3"]
nameList = ["One", "Two", "Three", "Four", "Five"]
queueLock = threading.Lock()
workQueue = Queue.Queue(10)
threads = []
threadID = 1