from Tkinter import *

#       The way to think about this is that each radio button menu

#       controls a different variable -- clicking on one of the

#       mutually exclusive choices in a radiobutton assigns some value

#       to an application variable you provide. When you define a

#       radiobutton menu choice, you have the option of specifying the

#       name of a varaible and value to assign to that variable when

#       that choice is selected. This clever mechanism relieves you,

#       the programmer, from having to write a dumb callback that

#       probably wouldn't have done anything more than an assignment

#       anyway. The Tkinter options for this follow their Tk

#       counterparts:

#       {"variable" : my_flavor_variable, "value" : "strawberry"}

#       where my_flavor_variable is an instance of one of the

#       subclasses of Variable, provided in Tkinter.py (there is

#       StringVar(), IntVar(), DoubleVar() and BooleanVar() to choose

#       from)

def makePoliticalParties(var):

    # make menu button

    Radiobutton_button = Menubutton(mBar, text='Political Party',

                                    underline=0)

    Radiobutton_button.pack(side=LEFT, padx='2m')

    # the primary pulldown

    Radiobutton_button.menu = Menu(Radiobutton_button)

    Radiobutton_button.menu.add_radiobutton(label='Republican',

                                            variable=var, value=1)

    Radiobutton_button.menu.add('radiobutton', {'label': 'Democrat',

                                                'variable' : var,

                                                'value' : 2})

    Radiobutton_button.menu.add('radiobutton', {'label': 'Libertarian',

                                                'variable' : var,

                                                'value' : 3})

    var.set(2)

    # set up a pointer from the file menubutton back to the file menu

    Radiobutton_button['menu'] = Radiobutton_button.menu

    return Radiobutton_button

def makeFlavors(var):

    # make menu button

    Radiobutton_button = Menubutton(mBar, text='Flavors',

                                    underline=0)

    Radiobutton_button.pack(side=LEFT, padx='2m')

    # the primary pulldown

    Radiobutton_button.menu = Menu(Radiobutton_button)

    Radiobutton_button.menu.add_radiobutton(label='Strawberry',

                                            variable=var, value='Strawberry')

    Radiobutton_button.menu.add_radiobutton(label='Chocolate',

                                            variable=var, value='Chocolate')

    Radiobutton_button.menu.add_radiobutton(label='Rocky Road',

                                            variable=var, value='Rocky Road')

    # choose a default

    var.set("Chocolate")

    # set up a pointer from the file menubutton back to the file menu

    Radiobutton_button['menu'] = Radiobutton_button.menu

    return Radiobutton_button

def printStuff():

    print "party is", party.get()

    print "flavor is", flavor.get()

    print

#################################################

#### Main starts here ...

root = Tk()

# make a menu bar

mBar = Frame(root, relief=RAISED, borderwidth=2)

mBar.pack(fill=X)

# make two application variables,

# one to control each radio button set

party = IntVar()

flavor = StringVar()

Radiobutton_button = makePoliticalParties(party)

Radiobutton_button2 = makeFlavors(flavor)

# finally, install the buttons in the menu bar.

# This allows for scanning from one menubutton to the next.

mBar.tk_menuBar(Radiobutton_button, Radiobutton_button2)

b = Button(root, text="print party and flavor", foreground="red",

           command=printStuff)

b.pack(side=TOP)

root.title('menu demo')

root.iconname('menu demo')

root.mainloop()