[Python] OpenCV cv2.waitKey() cannot detect the Delete key, what should I do?

I am using cv2.waitKey(1) & 0xFF to capture key events, but I found that it cannot correctly detect the Delete key. My current code is as follows:

import cv2

while True:
key = cv2.waitKey(1)
if key != -1: # -1 : timeout/no key event
print(f"Key pressed: {key}")

if key == 127:
print("Delete key detected!")
break

cv2.destroyAllWindows()


However, when I run this code and press the Delete key, it is not detected.

Environment: Windows 10, Python 3.9, OpenCV 4.5.5

Issue: key == 127 does not work

Expected Behavior: When I press Delete, it should print Delete key detected.

Questions:

• 1. 
     Can cv2.waitKey(1) correctly detect the Delete key?
     
     
  2. 
     Is there a more accurate way to detect the Delete key?
     

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