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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 astype(self, type_name):
 """Convert AstroImage object to some other kind of object. """

        if type_name == 'nddata':
            return self.as_nddata()

        if type_name == 'hdu':
            return self.as_hdu()

        raise ValueError("Unrecognized conversion type '%s'" % (type_name))