當我使用 opencv-python 版本 v4.3.0 在我的筆記本中運行這個簡單的代碼時。然后我的屏幕充滿了窗口，如圖所示。# importing the required modules   import cv2   import numpy as np     # capturing from the first camera attached   cap = cv2.VideoCapture(0)     # will continue to capture until 'q' key is pressed   while True:      ret, frame = cap.read()        # Capturing in grayscale      gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)        cv2.imshow('frame', frame)      cv2.imshow('gray', gray)        # Program will terminate when 'q' key is pressed      if cv2.waitKey(1) & 0xFF == ord('q'):          break   # Releasing all the resources cap.release() cv2.destroyAllWindows()