code: def datagetter(cls):
          
          with open('myfile', 'rt') as f:
              rows = [r for r in csv.reader(f)]
          dothing = lambda _: [i for i, v in enumerate(_)]
          rows = [dothing(_) for _ in rows]
          raise NotImplementedError('You need to implement this yourlself!')
          return rows
docs: example datagetter function, make any local modifications here