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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 movnam_hdu(self, extname, hdutype=ANY_HDU, extver=0):
 """ Move to the indicated HDU by name In general, it is not necessary to use this method explicitly. returns the one-offset extension number """

        extname = mks(extname)
        hdu = self._FITS.movnam_hdu(hdutype, extname, extver)
        return hdu