How to add Autoscroll on insert in Tkinter Listbox?

AFAIK the ScrollBar widget doesn't have an auto-scroll feature, but it can be easily implemented by calling the listBox's yview() method after you insert a new item. If you need the new item to be selected then you can do that manually too using the listbox's select_set method.

from Tkinter import *class AutoScrollListBox_demo:    def __init__(self, master):        frame = Frame(master, width=500, height=400, bd=1)        frame.pack()        self.listbox_log = Listbox(frame, height=4)        self.scrollbar_log = Scrollbar(frame)         self.scrollbar_log.pack(side=RIGHT, fill=Y)        self.listbox_log.pack(side=LEFT,fill=Y)         self.listbox_log.configure(yscrollcommand = self.scrollbar_log.set)        self.scrollbar_log.configure(command = self.listbox_log.yview)        b = Button(text="Add", command=self.onAdd)        b.pack()        #Just to show unique items in the list        self.item_num = 0    def onAdd(self):        self.listbox_log.insert(END, "test %s" %(str(self.item_num)))       #Insert a new item at the end of the list        self.listbox_log.select_clear(self.listbox_log.size() - 2)   #Clear the current selected item             self.listbox_log.select_set(END)                             #Select the new item        self.listbox_log.yview(END)                                  #Set the scrollbar to the end of the listbox        self.item_num += 1root = Tk()all = AutoScrollListBox_demo(root)root.title('AutoScroll ListBox Demo')root.mainloop()

try to do it in this way. (I have copied from another question: How to auto-scroll a gtk.scrolledwindow?) It works fine for me.

def on_TextOfLog_size_allocate(self, widget, event, data=None):    adj = self.scrolled_window.get_vadjustment()    adj.set_value( adj.upper - adj.page_size )