add concurrence examples

Concurrence_examples/threads_with_queues.py

@@ -1,36 +1,19 @@
-#!/usr/bin/env python3
-
-import time
 from queue import Queue
 from threading import Thread
- 
+
+
 NUM_WORKERS = 4
 task_queue = Queue()
- 
+
+
 def worker():
-    # Constantly check the queue for addresses
     while True:
         address = task_queue.get()
         run_function(address)
-         
-        # Mark the processed task as done
         task_queue.task_done()
- 
-start_time = time.time()
-         
-# Create the worker threads
+
+
 threads = [Thread(target=worker) for _ in range(NUM_WORKERS)]
- 
-# Add the websites to the task queue
-[task_queue.put(item) for item in SOME_LIST]
- 
-# Start all the workers
+[task_queue.put(item) for item in threads]
 [thread.start() for thread in threads]
- 
-# Wait for all the tasks in the queue to be processed
-task_queue.join()
- 
-         
-end_time = time.time()        
- 
-print('Time: {} secs'.format(end_time - start_time))
+task_queue.join()