ScrolledListbox (python, tkinter)

# I really prefer to use a Treeview for displaying data from a database
# This code is a copy of the ScrolledText widget, and I changed it to use a Listbox
# insted of a Text widget
##################################################################################
# I really prefer to use a Treeview for displaying data in rows and columns

from tkinter import Listbox, END, Tk, Frame, Scrollbar, Grid, Pack, Place, YES, BOTH


class ScrolledListbox(Listbox):
    def __init__(self, master=None, **kw):
        self.frame = Frame(master)
        self.frame.columnconfigure(0, weight=1)
        self.frame.rowconfigure(0, weight=1)
        # scrollbars
        self.vbar = Scrollbar(self.frame)
        self.hbar = Scrollbar(self.frame, orient='horizontal') # horizontal scrollbar
        self.vbar.grid(row=0, column=1, sticky='ns')
        self.hbar.grid(row=1, column=0, sticky='ew')

        kw.update({'yscrollcommand': self.vbar.set})
        kw.update({'xscrollcommand': self.hbar.set})
        super().__init__(self.frame, **kw)
        self.grid(row=0, column=0, sticky='nsew')
        self.vbar['command'] = self.yview
        self.hbar['command'] = self.xview

        # Copy geometry methods of self.frame without overriding Listbox
        # methods -- hack!
        listbox_meths = vars(Listbox).keys()
        methods = vars(Pack).keys() | vars(Grid).keys() | vars(Place).keys()
        methods = methods.difference(listbox_meths)

        for m in methods:
            if m[0] != '_' and m != 'config' and m != 'configure':
                setattr(self, m, getattr(self.frame, m))

    def __str__(self):
        return str(self.frame)


def main():
    root = Tk()
    root.title('ScrolledListbox example')
    slistbox = ScrolledListbox(bg='green')
    for i in range(40):
        # Here you can insert data retrieved from your database.
        # I'm using just a for loop to insert some text
        slistbox.insert(END, f'Hello number {i}. This is a copy of the ScrolledText widget code, but I changed it to make a scrolled listbox')
    slistbox.pack(expand=YES, fill=BOTH)
    root.mainloop()

if __name__ == "__main__":
    main()