怎样把ndarray转换为PyQt中的QPixmap

找不到文档，只在网上找到一些语焉不详，执行错误的代码，鼓捣了一个晚上，研（luan）究（gao）成功

    def img2pixmap(self, image):
        Y, X = image.shape[:2]
        self._bgra = np.zeros((Y, X, 4), dtype=np.uint8, order='C')
        self._bgra[..., 0] = image[..., 2]
        self._bgra[..., 1] = image[..., 1]
        self._bgra[..., 2] = image[..., 0]
        qimage = QtGui.QImage(self._bgra.data, X, Y, QtGui.QImage.Format_RGB32)
        pixmap = QtGui.QPixmap.fromImage(qimage)
        return pixmap

调用：

self.lable_img.setPixmap(self.img2pixmap(self.plus))

乱搞了一个晚上……