code: def _index_or_slice(index, stop):
      if stop is None:
          return index
  
      return slice(index, stop)
  
imports: from abc import abstractmethod, ABCMeta
  from ._compat import Sequence, Hashable
  from numbers import Integral
  import operator
  import six
  from pyrsistent._transformations import transform
label_desc: Use image node_id 3 for calling a global function with example usage: _index_or_slice(index, stop) and returns: slice, index