code: def _load_image(file_path):
          
          if not os.path.exists(file_path):
              raise FileNotFound(file_path)
  
          try:
              nii_img           = load_nipy_img(file_path)
              nii_img.file_path = file_path
              return nii_img
          except Exception as exc:
              raise Exception('Reading file {0}.'.format(file_path)) from exc
docs: Parameters
          ----------
          file_path: str
              Path to the nifti file
  
          Returns
          -------
          nipy.Image with a file_path member