code: def normalize_slice(s):
      """Replace Nones in slices with integers
  
      >>> normalize_slice(slice(None, None, None))
      slice(0, None, 1)
      """
      start, stop, step = s.start, s.stop, s.step
      if start is None:
          start = 0
      if step is None:
          step = 1
      if start < 0 or step < 0 or stop is not None and stop < 0:
          raise NotImplementedError()
      return slice(start, stop, step)
  
imports: from __future__ import annotations
  from collections.abc import Callable
  from itertools import zip_longest
  from numbers import Integral
  from typing import Any
  import numpy
  from dask import config
  from dask.array.chunk import getitem
  from dask.array.core import getter, getter_inline, getter_nofancy
  from dask.blockwise import fuse_roots, optimize_blockwise
  from dask.core import flatten, reverse_dict
  from dask.highlevelgraph import HighLevelGraph
  from dask.optimization import SubgraphCallable, fuse, inline_functions
  from dask.utils import ensure_dict
label_desc: Use image node_id 5 for calling a global function with example usage: normalize_slice(s) and returns: slice