code: def load_nipy_img(nii_file):
      
      # delayed import because could not install nipy on Python 3 on OSX
      import nipy
  
      if not os.path.exists(nii_file):
          raise FileNotFound(nii_file)
  
      try:
          return nipy.load_image(nii_file)
      except Exception as exc:
          raise Exception('Reading file {0}.'.format(repr_imgs(nii_file))) from exc
docs: Read a Nifti file and return as nipy.Image
  
      Parameters
      ----------
      param nii_file: str
          Nifti file path
  
      Returns
      -------
      nipy.Image