Solution: thread queue

import threading
import random
import sys
import time

thread_count = 5

counter = 0
queue = list(map(lambda x: ('main', random.randrange(5)), range(20)))
#print(queue)

locker = threading.Lock()

class ThreadedCount(threading.Thread):
    def run(self):
        global counter
        my_counter = 0
        thread = threading.current_thread()
        print('{} - start thread'.format(thread.name))
        while (True):
            locker.acquire()
            job = None
            if len(queue) > 0:
                counter += 1
                my_counter += 1
                job = queue[0]
                queue[0:1] = []
            locker.release()
            if job == None:
                print('{} - no more jobs'.format(thread.name))
                break

            print('{} - working on job {} ({}) from {} sleep for {}'
                .format(thread.name, counter, my_counter, job[0], job[1]))
            time.sleep(job[1])

        return

threads = []
for i in range(thread_count):
    threads.append(ThreadedCount())
for t in threads:
    t.start()
for t in threads:
    t.join()