Replace typo `INPUT` to `STOP`

examples/python-dataflow/object_detection.py

@@ -27,7 +27,7 @@ for event in node:
             node.send_output("bbox", arrays, event["metadata"])
         else:
             print("[object detection] ignoring unexpected input:", event_id)
-    elif event_type == "INPUT":
+    elif event_type == "STOP":
         print("[object detection] received stop")
     elif event_type == "ERROR":
         print("[object detection] error: ", event["error"])

examples/python-dataflow/plot.py

@@ -92,7 +92,7 @@ for event in node:
             case DoraStatus.STOP:
                 print("plotter returned stop status")
                 break
-    elif event_type == "INPUT":
+    elif event_type == "STOP":
         print("received stop")
     else:
         print("received unexpected event:", event_type)

examples/python-dataflow/webcam.py

@@ -42,7 +42,7 @@ while time.time() - start < 10:
             cv2.imencode(".jpg", frame)[1].tobytes(),
             event["metadata"],
         )
-    elif event_type == "INPUT":
+    elif event_type == "STOP":
         print("received stop")
         break
     else:

examples/python-operator-dataflow/webcam.py

@@ -58,7 +58,7 @@ class Operator:
                 pa.array(frame.ravel()),
                 dora_event["metadata"],
             )
-        elif event_type == "INPUT":
+        elif event_type == "STOP":
             print("received stop")
         else:
             print("received unexpected event:", event_type)