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import cv2
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cap = cv2.VideoCapture(0)
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if not cap.isOpened():
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print("无法打开摄像头")
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while True:
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ret, frame = cap.read()
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print("无法接受帧，请退出")
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break
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cv2.imshow("Camera", frame)
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if cv2.waitKey(1) & 0xFF == ord('q'):
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break
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cap.release()
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cv2.destroyAllWindows()
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