add more concurrent examples

Concurrence_examples/threads_with_queues.py

@@ -0,0 +1,34 @@
+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
+[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: %ssecs" % (end_time - start_time))