Chapter folders renamed

Chapter07/asyncio/asyncio3.py

@@ -0,0 +1,39 @@
+#asyncio3.py to distribute work via queue
+import asyncio
+import random
+import time
+
+async def executer(name, queue):
+    while True:
+        exec_time = await queue.get()
+        await asyncio.sleep(exec_time)
+        queue.task_done()
+        print(f'{name} has taken  {exec_time:.2f} seconds')
+
+async def main ():
+
+    myqueue = asyncio.Queue()
+    calc_exuection_time = 0
+    for _ in range(10):
+        sleep_for = random.uniform(0.4, 0.8)
+        calc_exuection_time += sleep_for
+        myqueue.put_nowait(sleep_for)
+
+    tasks = []
+    for id in range(3):
+        task = asyncio.create_task(executer(f'Task-{id+1}', myqueue))
+        tasks.append(task)
+
+    start_time = time.monotonic()
+    await myqueue.join()
+    total_exec_time = time.monotonic() - start_time
+
+    for task in tasks:
+        task.cancel()
+
+    await asyncio.gather(*tasks, return_exceptions=True)
+
+    print(f"Calculated execution time {calc_exuection_time:0.2f}")
+    print(f"Actual execution time {total_exec_time:0.2f}")
+
+asyncio.run(main())