new_contents: from astropy.io import fits
  
  hdu=fits.open(file)
  data=hdu[1].data
  wave=10**data['loglam']
  flux=data['flux']*1e-17
  
  const=np.median(flux[0:50])/((wave[0])**(-2.3))
  #print const
  UV_wave=np.arange(2000,wave[0],0.5)
  UV_normalized_flux=(const*UV_wave**-2.3)
  wave=np.concatenate((UV_wave,wave),axis=0)
  flux=np.concatenate((UV_normalized_flux,flux),axis=0)
  
subject: Update uvcontinuum.py