code: def is_total_slice(item, shape):
      
  
      # N.B., assume shape is normalized
  
      if item == Ellipsis:
          return True
      if item == slice(None):
          return True
      if isinstance(item, slice):
          item = item,
      if isinstance(item, tuple):
          return all(
              (isinstance(s, slice) and
                  ((s == slice(None)) or
                   ((s.stop - s.start == l) and (s.step in [1, None]))))
              for s, l in zip(item, shape)
          )
      else:
          raise TypeError('expected slice or tuple of slices, found %r' % item)
docs: Determine whether `item` specifies a complete slice of array with the
      given `shape`. Used to optimize __setitem__ operations on the Chunk
      class.