gistfile1.py

##Reference
## http://effbot.org/tkinterbook/label.htm
import Tkinter

root = Tkinter.Tk()

variable = Tkinter.StringVar()
variable.set('0')
def add():
    variable.set(int(variable.get()) + 1)

def minus():
    variable.set(int(variable.get()) - 1)




label = Tkinter.Label(root, textvariable=variable)
label.pack()

frame = Tkinter.Frame(root)
frame.pack()

button_minus = Tkinter.Button(frame, text='-')
button_minus.config(command=minus)
button_minus.pack(side=Tkinter.LEFT)

button_plus = Tkinter.Button(frame, text='+')
button_plus.config(command=add)
button_plus.pack(side=Tkinter.LEFT)


root.mainloop()