tbird20d/grabserial — pull request #1 by yegorich (2013-12-17 13:42:08+00:00)
Title: Check device against list_ports.comports()

COM ports in Windows are not files and cannot be handled
as Linux devices to check their existence. Use list_ports.comports()
and check, if device exists against available devices.

Signed-off-by: Yegor Yefremov