message: Add the missing comma
  A missing comma in a list of string means the string "Rank" and "ShapeN" will be concatenated implicitly.
diff: @@ -358,7 +358,7 @@ class WhileOp(object):
  output = False
  if op.type in [
  "Shape",
  - "Rank"
  + "Rank",
  "ShapeN",
  "ZerosLike",
  "TensorArrayV3",
  