key detect

[Alex Taslab]

Hi everybody, does anyone know how to detect a key press from a
keyboard. Well I do know how to do that, but i need to detect just one
press and ignore the others. I mean, my program checks an input from the
outside (a sensor) and i emulate that signal as a keypress, but the
sensor doesn`t send the signal as a unique pulse y just keeps sending
signal during some seconds, so that is like to be pressing one key for a
period of time. How can i take that first press of a key and ignore the
others? I am using pygtk. thanks everybody!