Set font from Root component，fontcomponent,from Tkinter

Set font from Root component，fontcomponent,from Tkinter

from Tkinter import *class AllTkinterWidgets:    def __init__(self, master):        frame = Frame(master, width=500, height=400, bd=1)        frame.pack()  self.mbar = Frame(frame, relief = 'raised', bd=2)  self.mbar.pack(fill = X)  self.filebutton = Menubutton(self.mbar, text = 'File')  self.filebutton.pack(side = LEFT)  self.filemenu = Menu(self.filebutton, tearoff=0)  self.filebutton['menu'] = self.filemenu  self.filemenu.add('command', label = 'Exit', command = self.quit)  self.objectbutton = Menubutton(self.mbar, text = 'Object', )  self.objectbutton.pack(side = LEFT)  self.objectmenu = Menu(self.objectbutton, tearoff=0)  self.objectbutton['menu'] = self.objectmenu  self.objectmenu.add('command', label = 'object', command = self.stub)  self.editbutton = Menubutton(self.mbar, text = 'Edit', )  self.editbutton.pack(side = LEFT)  self.editmenu = Menu(self.editbutton, tearoff=0)  self.editbutton['menu'] = self.editmenu  self.editmenu.add('command', label = 'edit', command = self.stub)  self.viewbutton = Menubutton(self.mbar, text = 'View', )  self.viewbutton.pack(side = LEFT)  self.viewmenu = Menu(self.viewbutton, tearoff=0)  self.viewbutton['menu'] = self.viewmenu  self.viewmenu.add('command', label = 'view', command = self.stub)  self.toolsbutton = Menubutton(self.mbar, text = 'Tools', )  self.toolsbutton.pack(side = LEFT)  self.toolsmenu = Menu(self.toolsbutton, tearoff=0)  self.toolsbutton['menu'] = self.toolsmenu  self.toolsmenu.add('command', label = 'tools', command = self.stub)  self.helpbutton = Menubutton(self.mbar, text = 'Help', )  self.helpbutton.pack(side = RIGHT)  self.helpmenu = Menu(self.helpbutton, tearoff=0)  self.helpbutton['menu'] = self.helpmenu  self.helpmenu.add('command', label = 'help', command = self.stub)    def quit(self):        root.destroy()    def stub(self):        passroot = Tk()root.option_add('*font', ('verdana', 10, 'bold'))all = AllTkinterWidgets(root)root.title('Tkinter Widgets')root.mainloop()