One of my team members asked me how to create message boxes with Python Tkinter. Then I researched more about this topic and In this tutorial, I will provide detailed examples and explanations to help you understand the concepts and implement them.
Create Message Boxes with Python Tkinter
To create message boxes in Tkinter, you need to use the tkinter.messagebox module. This module provides a set of functions that allow you to display various types of message boxes, such as information, warning, error, and confirmation boxes.
Here’s a basic example of how to create an information message box:
import tkinter as tk
from tkinter import messagebox
def show_message():
messagebox.showinfo("Information", "Hello, John! This is an information message.")
window = tk.Tk()
window.title("Message Box Example")
button = tk.Button(window, text="Show Message", command=show_message)
button.pack()
window.mainloop()You can look at the output in the screenshot below.
In this example, we create a simple window with a button. When the button is clicked, it calls the show_message() function, which displays an information message box with the title “Information” and the message “Hello, John! This is an information message.”
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Types of Message Boxes
Tkinter provides several types of message boxes that you can use depending on the nature of the message you want to convey. Let’s explore each type with examples.
1. Information Message Box
An information message box is used to display general information to the user. You can create an information message box using the showinfo() function.
messagebox.showinfo("Information", "The operation completed successfully.")You can look at the output in the screenshot below.
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2. Warning Message Box
A warning message box is used to display a warning or caution to the user. You can create a warning message box using the showwarning() function.
messagebox.showwarning("Warning", "The file you are trying to access is read-only.")You can look at the output in the screenshot below.
3. Error Message Box
An error message box is used to display an error message to the user. You can create an error message box using the showerror() function.
messagebox.showerror("Error", "An unexpected error occurred. Please try again later.")You can look at the output in the screenshot below.
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4. Confirmation Message Box
A confirmation message box is used to ask the user for confirmation before proceeding with an action. You can create a confirmation message box using the askquestion() function.
result = messagebox.askquestion("Confirmation", "Are you sure you want to delete the file?")
if result == 'yes':
# Perform the deletion
print("File deleted.")
else:
print("Deletion canceled.")You can look at the output in the screenshot below.
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Customize Message Boxes
Tkinter allows you to customize the appearance and behavior of message boxes to suit your application’s needs. Here are a few ways you can customize message boxes:
1. Set the Icon
You can set the icon of a message box to indicate the type of message. Tkinter provides several predefined icons, such as INFO, WARNING, ERROR, and QUESTION. You can specify the icon using the icon parameter.
messagebox.showinfo("Information", "Operation completed.", icon='info')You can look at the output in the screenshot below.
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2. Set the Default Button
By default, the “OK” button is focused on a message box. However, you can change the default button using the default parameter.
messagebox.askquestion("Confirmation", "Do you want to proceed?", default='no')You can look at the output in the screenshot below.
3. Set the Parent Window
If you have multiple windows in your application, you can specify the parent window for a message box using the parent parameter. This ensures that the message box is displayed on top of the correct window.
window = tk.Tk()
messagebox.showinfo("Information", "Hello, Sarah!", parent=window)You can look at the output in the screenshot below.
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4. Ask Question
ask question prompt is used to ask questions from the user. The response can be collected in the ‘Yes’ or ‘No’ form. This function returns the ‘yes’ or ‘no’. These return types can be controlled using an if-else statement. We will see this in the below example.
from tkinter import *
from tkinter import messagebox
ws = Tk()
ws.title('Python Guides')
ws.geometry('300x100')
def askMe():
res = messagebox.askquestion('askquestion', 'Do you like cats?')
if res == 'yes':
messagebox.showinfo('Response', 'You like Cats')
elif res == 'no':
messagebox.showinfo('Response', 'You must be a dog fan.')
else:
messagebox.showwarning('error', 'Something went wrong!')
Button(ws, text='Click here', padx=10, pady=5, command=askMe).pack(pady=20)
ws.mainloop()You can look at the output in the screenshot below.
5. Popup Dialog
The Popup dialog box is similar to the popup message, we see a window inside the window buttons placed on clicking on any of these buttons a Popup dialog box appears on the screen.
from tkinter import *
import tkinter.messagebox
ws = Tk()
ws.title("Python Guides")
ws.geometry('500x300')
def Eastside():
tkinter.messagebox.showinfo("Python Guides", "Right button Clicked")
def Westside():
tkinter.messagebox.showinfo("Python Guides", "Left button Clicked")
def Northside():
tkinter.messagebox.showinfo("Python Guides", "Top button Clicked")
def Southside():
tkinter.messagebox.showinfo("Python Guides", "Bottom button Clicked")
button1 = Button(ws, text="Left", command=Westside, pady=10)
button2 = Button(ws, text="Right", command=Eastside, pady=10)
button3 = Button(ws, text="Top", command=Northside, pady=10)
button4 = Button(ws, text="Bottom", command=Southside, pady=10)
button1.pack(side=LEFT)
button2.pack(side=RIGHT)
button3.pack(side=TOP)
button4.pack(side=BOTTOM)
ws.mainloop()After running the above code we get output in which we see four buttons Paced at “Top”, “Bottom”, and “Left”, and On clicking on the Top button a Popup dialog opens with the message”Top button” on the window.
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Best Practices for Using Message Boxes
When using message boxes in your Python Tkinter applications, consider the following best practices:
- Use appropriate message box types based on the nature of the message (information, warning, error, or confirmation).
- Keep the message concise and clear. Avoid using technical jargon or confusing language.
- Provide meaningful titles for the message boxes to give context to the user.
- Use message boxes sparingly to avoid overwhelming the user with too many popups.
- Consider the user experience and provide appropriate actions or options in the message box.
Here’s an example that demonstrates these best practices:
import tkinter as tk
from tkinter import messagebox
def save_changes():
result = messagebox.askquestion("Confirmation", "Do you want to save the changes?")
if result == 'yes':
# Perform the save operation
messagebox.showinfo("Success", "Changes saved successfully.")
else:
messagebox.showinfo("Canceled", "Changes not saved.")
window = tk.Tk()
window.title("Text Editor")
text_area = tk.Text(window)
text_area.pack()
save_button = tk.Button(window, text="Save", command=save_changes)
save_button.pack()
window.mainloop()In this example, we create a simple text editor application. When the user clicks the “Save” button, a confirmation message box is displayed asking if they want to save the changes. If the user confirms, the changes are saved, and a success message is shown. If the user cancels, an information message is displayed indicating that the changes were not saved.
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Conclusion
In this tutorial, I helped you to learn how to create message boxes with Python Tkinter. I discussed how to create message boxes with Python Tkinter and the types of message boxes. I also discussed how to customize message boxes and some best practices for using message boxes.
You may read:
- How to go to next page in Python Tkinter Program
- How to read a text file using Python Tkinter
- How to Take User Input and Store in Variable using Python Tkinter
I am Bijay Kumar, a Microsoft MVP in SharePoint. Apart from SharePoint, I started working on Python, Machine learning, and artificial intelligence for the last 5 years. During this time I got expertise in various Python libraries also like Tkinter, Pandas, NumPy, Turtle, Django, Matplotlib, Tensorflow, Scipy, Scikit-Learn, etc… for various clients in the United States, Canada, the United Kingdom, Australia, New Zealand, etc. Check out my profile.
