Spin Gtk

from gi.repository import Gtk

class SpinButtonWindow(Gtk.Window):

    def __init__(self):
        Gtk.Window.__init__(self, title="SpinButton Demo")
        self.set_border_width(10)

        hbox = Gtk.Box(spacing=6)
        self.add(hbox)

        self.adjustment = Gtk.Adjustment(0, 0, 10, 2, 0, 0)
        self.spinbutton = Gtk.SpinButton()
        self.spinbutton.set_adjustment(self.adjustment)
        self.spinbutton.connect("value-changed", self.clic,None)
        hbox.pack_start(self.spinbutton, False, False, 0)

    def clic(self,boton,signal):
        print boton.get_value() # Con esta funcion nos devuelve un float
        print boton.get_value_as_int() # Con esta un int

win = SpinButtonWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()