diff --git a/test/2024,9,23/mouse_event.py b/test/2024,9,23/mouse_event.py
index 44aacf0..9fc160a 100644
--- a/test/2024,9,23/mouse_event.py
+++ b/test/2024,9,23/mouse_event.py
@@ -2,17 +2,18 @@ from pickletools import uint8
 
 import cv2 as cv
 import numpy as np
-
+# setup a write 3 channel image
 img = np.ones((512, 512, 3), dtype=np.uint8) * 255
 
-
+# define callback function
 def draw_circle(event, x, y, flags, param):
     if event == cv.EVENT_LBUTTONDOWN:
+        # draw a black 20px radius circle on img
         cv.circle(img, (x, y), 20, (0, 0, 0), -1)
 
-
+# setup a window named 'show_img'
 cv.namedWindow('show_img')
-
+# set a mouse callback
 cv.setMouseCallback('show_img', draw_circle)
 while (1):
     cv.imshow('show_img', img)