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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()