"""a couple of classes for implementing partial tabbed-page like behaviour""" from Tkinter import * class InvalidTabPage(Exception): passclass AlreadyExists(Exception): pass class PageTab(Frame):    """    a 'page tab' like framed button    """    def __init__(self,parent):        Frame.__init__(self, parent,borderwidth=2,relief=RIDGE)        self.button=Radiobutton(self,padx=5,pady=5,takefocus=FALSE,                indicatoron=FALSE,highlightthickness=0,                borderwidth=0,selectcolor=self.cget('bg'))        self.button.pack() class TabPageSet(Frame):    """    a set of 'pages' with TabButtons for controlling their display    """    def __init__(self,parent,pageNames=[],**kw):        """        pageNames - a list of strings, each string will be the dictionary key        to a page's data, and the name displayed on the page's tab. Should be        specified in desired page order. The first page will be the default        and first active page.        """        Frame.__init__(self, parent, kw)        self.grid_location(0,0)        self.columnconfigure(0,weight=1)        self.rowconfigure(1,weight=1)        self.tabBar=Frame(self)        self.tabBar.grid(row=0,column=0,sticky=EW)        self.activePage=StringVar(self)        self.defaultPage=''        self.pages={}        for name in pageNames:            self.AddPage(name)     def ChangePage(self,pageName=None):        if pageName:            if pageName in self.pages.keys():                self.activePage.set(pageName)            else:                raise InvalidTabPage, 'Invalid TabPage Name'        ## pop up the active 'tab' only        for page in self.pages.keys():            self.pages[page]['tab'].config(relief=RIDGE)        self.pages[self.GetActivePage()]['tab'].config(relief=RAISED)        ## switch page        self.pages[self.GetActivePage()]['page'].lift()     def GetActivePage(self):        return self.activePage.get()     def AddPage(self,pageName):        if pageName in self.pages.keys():            raise AlreadyExists, 'TabPage Name Already Exists'        self.pages[pageName]={'tab':PageTab(self.tabBar),                'page':Frame(self,borderwidth=2,relief=RAISED)}        self.pages[pageName]['tab'].button.config(text=pageName,                command=self.ChangePage,variable=self.activePage,                value=pageName)        self.pages[pageName]['tab'].pack(side=LEFT)        self.pages[pageName]['page'].grid(row=1,column=0,sticky=NSEW)        if len(self.pages)==1: # adding first page            self.defaultPage=pageName            self.activePage.set(self.defaultPage)            self.ChangePage()     def RemovePage(self,pageName):        if not pageName in self.pages.keys():            raise InvalidTabPage, 'Invalid TabPage Name'        self.pages[pageName]['tab'].pack_forget()        self.pages[pageName]['page'].grid_forget()        self.pages[pageName]['tab'].destroy()        self.pages[pageName]['page'].destroy()        del(self.pages[pageName])        # handle removing last remaining, or default, or active page        if not self.pages: # removed last remaining page            self.defaultPage=''            return        if pageName==self.defaultPage: # set a new default page            self.defaultPage=\                self.tabBar.winfo_children()[0].button.cget('text')        if pageName==self.GetActivePage(): # set a new active page            self.activePage.set(self.defaultPage)        self.ChangePage() if __name__ == '__main__':    #test dialog    root=Tk()    tabPage=TabPageSet(root,pageNames=['Foobar','Baz'])    tabPage.pack(expand=TRUE,fill=BOTH)    Label(tabPage.pages['Foobar']['page'],text='Foo',pady=20).pack()    Label(tabPage.pages['Foobar']['page'],text='Bar',pady=20).pack()    Label(tabPage.pages['Baz']['page'],text='Baz').pack()    entryPgName=Entry(root)    buttonAdd=Button(root,text='Add Page',            command=lambda:tabPage.AddPage(entryPgName.get()))    buttonRemove=Button(root,text='Remove Page',            command=lambda:tabPage.RemovePage(entryPgName.get()))    labelPgName=Label(root,text='name of page to add/remove:')    buttonAdd.pack(padx=5,pady=5)    buttonRemove.pack(padx=5,pady=5)    labelPgName.pack(padx=5)    entryPgName.pack(padx=5)    tabPage.ChangePage()    root.mainloop()