TkInter message box

The Tkinter tkMessageBox has various methods to display a message box.

There is a slight difference between Tkinter for Python 2.7 and Python 3.
To find your Python version try one of these commands:

python --version
python3 --version

Related courses
Tkinter GUI Application Development Projects

Tkinter Message box

Tkinter Message box
TkMessage box
To show a minimalistic Tkinter message box, use the function showinfo() where the parameters are the window title and text.

The showinfo() function is in a different module depending on the Python version.

Python 3.x

from tkinter import messagebox
messagebox.showinfo("Title", "a Tk MessageBox")

Python 2.7

import Tkinter
import tkMessageBox
tkMessageBox.showinfo("Title", "a Tk MessageBox")

Tkinter showerror, showwarning and showinfo

Tk messagebox dialog

Tkinter includes several other message boxes:

  • showerror()
  • showwarning()
  • showinfo()

Python 3.x

import tkinter
from tkinter import messagebox
# hide main window
root = tkinter.Tk()
# message box display
messagebox.showerror("Error", "Error message")
messagebox.showwarning("Warning","Warning message")
messagebox.showinfo("Information","Informative message")

Python 2.7

import Tkinter
import tkMessageBox
# An error box
tkMessageBox.showerror("Error","No disk space left on device")
# A warning box 
tkMessageBox.showwarning("Warning","Could not start service")
# An information box
tkMessageBox.showinfo("Information","Created in Python.")

You may like: Tkinter Question Dialog or More Tkinter