autocomplete_list

import tkinter as tk
import re  # import regular expression library
from tkinter import END

my_w = tk.Tk()
my_w.geometry("410x400")  # Size of the window
my_w.title("plus2net.com")  # Adding a title
font1 = ('Times', 24, 'bold')  # font size and style
l0 = tk.Label(text='Autocomplete', font=font1)  # adding label at top
l0.grid(row=0, column=1)
# data source list,
my_list = ['aecde', 'adba', 'acbd', 'abcd', 'abded',
           'bdbd', 'baba', 'bcbc', 'bdbd']


def my_upd(my_widget):  # On selection of option
    my_w = my_widget.widget
    index = int(my_w.curselection()[0])  # position of selection
    value = my_w.get(index)  # selected value
    e1_str.set(value)  # set value for string variable of Entry
    l1.delete(0, END)  # Delete all elements of Listbox


def my_down(my_widget):  # down arrow is clicked
    l1.focus()  # move focus to Listbox
    l1.selection_set(0)  # select the first option


e1_str = tk.StringVar()  # string variable
e1 = tk.Entry(my_w, textvariable=e1_str, font=font1)  # entry
e1.grid(row=1, column=1, padx=10, pady=0)
# listbox
l1 = tk.Listbox(my_w, height=6, font=font1, relief='flat',
                bg='SystemButtonFace', highlightcolor='SystemButtonFace')
l1.grid(row=2, column=1)


def get_data(*args):  # populate the Listbox with matching options
    search_str = e1.get()  # user entered string
    l1.delete(0, END)  # Delete all elements of Listbox
    for element in my_list:
        if (re.match(search_str, element, re.IGNORECASE)):
            l1.insert(tk.END, element)  # add matching options to Listbox


# l1.bind('<<ListboxSelect>>', my_upd)
e1.bind('<Down>', my_down)  # down arrow key is pressed
l1.bind('<Right>', my_upd)  # right arrow key is pressed
l1.bind('<Return>', my_upd)  # return key is pressed
e1_str.trace('w', get_data)  #
# print(my_w['bg']) # reading background colour of window
my_w.mainloop()  # Keep the window open