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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 read(self, **keys):
 """ Read the image. If the HDU is an IMAGE_HDU, read the corresponding image. Compression and scaling are dealt with properly. """

        if not self.has_data():
            return None

        dtype, shape = self._get_dtype_and_shape()
        array = numpy.zeros(shape, dtype=dtype)
        self._FITS.read_image(self._ext+1, array)
        return array