python opencv video

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用opencv 打开摄像头python版本

import cv2

cap = cv2.VideoCapture(0)

while True:
    ret,frame = cap.read()

cv2.imshow("frame", frame)
        if cv2.waitKey(1) & 0xFF == ord('q'):
            break
    else:
        break
cap.release()
out.release()
cv2.destroyAllWindows()