# A ScrolledList widget feels like a list widget but also has a# vertical scroll bar on its right.  (Later, options may be added to# add a horizontal bar as well, to make the bars disappear# automatically when not needed, to move them to the other side of the# window, etc.)## Configuration options are passed to the List widget.# A Frame widget is inserted between the master and the list, to hold# the Scrollbar widget.# Most methods calls are inherited from the List widget; Pack methods# are redirected to the Frame widget however. from Tkinter import *from Tkinter import _cnfmerge class ScrolledListbox(Listbox):    def __init__(self, master=None, cnf={}):        cnf = _cnfmerge(cnf)        fcnf = {}        vcnf = {'name': 'vbar',            Pack: {'side': 'right', 'fill': 'y'},}        for k in cnf.keys():            if type(k) == ClassType or k == 'name':                fcnf[k] = cnf[k]                del cnf[k]        self.frame = Frame(master, fcnf)        self.vbar = Scrollbar(self.frame, vcnf)        cnf[Pack] = {'side': 'left', 'fill': 'both', 'expand': 'yes'}        cnf['name'] = 'list'        Listbox.__init__(self, self.frame, cnf)        self['yscrollcommand'] = (self.vbar, 'set')        self.vbar['command'] = (self, 'yview')         # Copy Pack methods of self.frame -- hack!        for m in Pack.__dict__.keys():            if m[0] != '_' and m != 'config':                setattr(self, m, getattr(self.frame, m))