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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def nonzero_hsv_data(self):
 """ Computes non zero hsv values. Returns ------- :obj:`numpy.ndarray` array of the hsv values for the image """

        hsv_data = cv2.cvtColor(self.data, cv2.COLOR_BGR2HSV)
        nonzero_px = self.nonzero_pixels()
        return hsv_data[nonzero_px[:, 0], nonzero_px[:, 1], ...]