Python provides a variety of GUI (Graphic User Interface) types such as PyQT, Tkinter, Kivy, WxPython, and PySide. Among them, tkinter is the most commonly used GUI module in Python since it is simple and easy to understand. The word Tkinter comes from the Tk interface. The tkinter module is available in Python standard library which has to be imported while writing a program in Python to generate a GUI.
Note: Tkinter(capital T) is different from the tkinter. Tkinter is used in Python2.x and is changed to tkinter in Python.3x.
Combobox is a combination of Listbox and an entry field. It is one of the Tkinter widgets where it contains a down arrow to select from a list of options. It helps the users to select according to the list of options displayed. When the user clicks on the drop-down arrow on the entry field, a pop up of the scrolled Listbox is displayed down the entry field. The selected option will be displayed in the entry field only when an option from the Listbox is selected.
Syntax:
combobox = ttk.Combobox(master, option=value, ...)Example 1: Combobox widget without setting a default value.
# python program demonstrating
# Combobox widget using tkinter
import tkinter as tk
from tkinterimport tkinter1
tkinter3
tkinter4tkinter5 tkinter6
tkinter7tkinter8tkinter9
# python program demonstrating0# python program demonstrating1tkinter9
# python program demonstrating4
# python program demonstrating5tkinter5 # python program demonstrating7# python program demonstrating8
# python program demonstrating9# Combobox widget using tkinter0tkinter5 # Combobox widget using tkinter2# Combobox widget using tkinter3tkinter5# Combobox widget using tkinter5# python program demonstrating8
# python program demonstrating9# Combobox widget using tkinter8tkinter5 0 1 2 3 4tkinter5 6 7tkinter5 9tkinter9
2
# python program demonstrating5tkinter5 5 2
# python program demonstrating9# Combobox widget using tkinter8tkinter5 0 1 2import3import4tkinter5 6 2
# python program demonstrating9import9tkinter5 tkinter as tk1tkinter as tk2tkinter5 import3tkinter as tk5tkinter5 tkinter as tk7tkinter9
from0
from1tkinter5 from3
from4tkinter5 from6tkinter5 from8from9tkinter5 tkinter1
tkinter3
tkinter4tkinter5tkinter6tkinter5 0tkinter9# python program demonstrating8
tkinter01tkinter02 2
tkinter01tkinter05 2
tkinter01tkinter08 2
tkinter01tkinter11 2
tkinter01tkinter14 2
tkinter01tkinter17 2
tkinter01tkinter20 2
tkinter01tkinter23 2
tkinter01tkinter26 2
tkinter01tkinter29 2
tkinter01tkinter32tkinter9
tkinter35tkinter5 9tkinter38tkinter5 tkinter as tk1tkinter9
tkinter42
tkinter43
Output:
Example 2: Combobox with initial default values.
We can also set the initial default values in the Combobox widget as shown in the below sample code.
import tkinter as tk
from tkinterimport tkinter1
tkinter3
tkinter4tkinter5 tkinter6
# python program demonstrating0tkinter56tkinter9
tkinter58
# python program demonstrating5tkinter5 5# python program demonstrating8
tkinter63# Combobox widget using tkinter8tkinter5 0 1 2import3import4tkinter5 6# python program demonstrating8
tkinter63import9tkinter5 3tkinter as tk2tkinter5 import3tkinter as tk5tkinter5 tkinter as tk7tkinter9