adding mqtt resources

week6/resources/client.py

@@ -0,0 +1,29 @@
+import time
+import signal
+import paho.mqtt.client as mqtt
+
+BROKER = "localhost"
+PORT = 1883
+TOPIC = "python/mqtt/test"
+
+def on_connect(client, userdata, flags, reason_code, properties):
+    print(f"Connected (rc={reason_code})")
+    client.subscribe(TOPIC)
+
+def on_message(client, userdata, msg):
+    print(f"[{msg.topic}] {msg.payload.decode()}")
+
+client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
+client.on_connect = on_connect
+client.on_message = on_message
+
+client.connect(BROKER, PORT, 60)
+client.loop_start()
+
+# Publish one test message
+time.sleep(2)
+client.publish(TOPIC, "Hello from Paho MQTT!", qos=1)
+print("Published. Listening... (Ctrl+C to exit)")
+
+# Block forever until SIGINT
+signal.pause()