Document the proper exception to be raised by I/O operations on closed files; error reported by Ng Pheng Siong <ngps@post1.com>.
Document the proper exception to be raised by I/O operations on closed
files; error reported by Ng Pheng Siong <ngps@post1.com>.

Make sure that various special object attributes are properly indexed.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator