⚗️ Use websockets w/o context manager and export it

System/ESP32_communicator/async_stream_without_context_mgr.py

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+"""
+This file is modification of `asynchronouse_streaming.py` with a change as
+- Stream without using context manager (~not using `with` operator which handles opening and closing)
+
+1st test:
+    - test without using context manager - as per the ref. below.
+2nd test:
+    - initiate the connection in another file and use that in this file.
+    - this is done by using another file called `connection_initiator.py`
+"""
+import websockets
+import asyncio
+import numpy as np
+import cv2
+from connection_initiator import ws
+
+# url = "ws://192.168.64.165:81"
+async def listen():
+    # ws = await websockets.connect(url)
+    try:
+        while True:
+            msg = await ws.recv()
+            # print("Received message", msg)
+            npimg = np.array(bytearray(msg), dtype=np.uint8) # even try with msg.data
+            # print(npimg)
+            img = cv2.imdecode(npimg, -1)
+            cv2.imshow("img", img)
+            if cv2.waitKey(1) == 27:
+                print('EXITING')
+                break
+    except Exception as e:
+        print(e)
+    finally:
+        await ws.ws_client.close()
+
+
+asyncio.get_event_loop().run_until_complete(listen())
+
+# Reference: https://stackoverflow.com/questions/64897045/how-to-connect-to-websocket-without-context-manager

System/ESP32_communicator/connection_initiator.py

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+"""
+This file is created as a part of 2nd test in `async_stream_without_context_mgr.py`
+"""
+import websockets
+import asyncio
+
+url = "ws://192.168.64.165:81"
+async def listen():
+    global ws
+    ws = await websockets.connect(url)
+
+
+asyncio.get_event_loop().run_until_complete(listen())