Make it possible to instantiate a _FileIO() with an integer file descriptor instead of a filename. Add a 'closed' attribute.
Make it possible to instantiate a _FileIO() with an integer file descriptor
instead of a filename.
Add a 'closed' attribute.

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