old_contents: 
  __all__ = ['fft', 'fft2d', 'fftnd', 'hermite_fft', 'inverse_fft', 'inverse_fft2d',
             'inverse_fftnd', 'inverse_hermite_fft', 'inverse_real_fft', 'inverse_real_fft2d',
             'inverse_real_fftnd', 'real_fft', 'real_fft2d', 'real_fftnd']
  
  from fftpack import fft
  from fftpack import fft2 as fft2d
  from fftpack import fftn as fftnd
  from fftpack import hfft as hermite_fft
  from fftpack import ifft as inverse_fft
  from fftpack import ifft2 as inverse_fft2d
  from fftpack import ifftn as inverse_fftnd
  from fftpack import ihfft as inverse_hermite_fft
  from fftpack import irefft as inverse_real_fft
  from fftpack import irefft2 as inverse_real_fft2d
  from fftpack import irefftn as inverse_real_fftnd
  from fftpack import refft as real_fft
  from fftpack import refft2 as real_fft2d
  from fftpack import refftn as real_fftnd
  
new_contents: 
  __all__ = ['fft', 'fft2d', 'fftnd', 'hermite_fft', 'inverse_fft', 'inverse_fft2d',
             'inverse_fftnd', 'inverse_hermite_fft', 'inverse_real_fft', 'inverse_real_fft2d',
             'inverse_real_fftnd', 'real_fft', 'real_fft2d', 'real_fftnd']
  
  from fftpack import fft
  from fftpack import fft2 as fft2d
  from fftpack import fftn as fftnd
  from fftpack import hfft as hermite_fft
  from fftpack import ifft as inverse_fft
  from fftpack import ifft2 as inverse_fft2d
  from fftpack import ifftn as inverse_fftnd
  from fftpack import ihfft as inverse_hermite_fft
  from fftpack import irfft as inverse_real_fft
  from fftpack import irfft2 as inverse_real_fft2d
  from fftpack import irfftn as inverse_real_fftnd
  from fftpack import rfft as real_fft
  from fftpack import rfft2 as real_fft2d
  from fftpack import rfftn as real_fftnd
  
subject: Fix names used in dft.old refft->rfft