message: Allow non-index slices to be used without conversion, instead of rejecting them - they are widely used in TF code.
diff: @@ -56,8 +56,7 @@ class SliceTransformer(converter.Base):
  def visit_Subscript(self, node):
  node = self.generic_visit(node)
  if not isinstance(node.slice, gast.Index):
  - # TODO(mdan): It might make more sense to wave them through.
  - raise NotImplementedError('non-index slice')
  + return node
  if not isinstance(node.ctx, gast.Load):
  # Index writes are handled at a higher level, one at which the rvalue is
  