Python Tkinter name input and message display

Python Tkinter Events and Event Handling: Exercise-6 with Solution

Write a Python program that allows users to input their name into a Tkinter Entry widget. When they press Enter or click a button, display a message with their name.

Sample Solution:

Python Code:

import tkinter as tk
# Function to display a message with the user's name
def display_name():
    name = name_entry.get()  # Get the text entered in the Entry widget
    if name:
        message_label.config(text=f"Hello, {name}!")
# Create the main window
root = tk.Tk()
root.title("Name Input")
# Create a Label widget for instructions
instruction_label = tk.Label(root, text="Input your name:")
instruction_label.pack(pady=10)

# Create an Entry widget for user input
name_entry = tk.Entry(root)
name_entry.pack(pady=5)
# Create a button to submit the name
submit_button = tk.Button(root, text="Submit", command=display_name)
submit_button.pack(pady=10)
# Create a Label widget to display the message
message_label = tk.Label(root, text="", font=("Helvetica", 16))
message_label.pack()
# Bind the Enter key to call the display_name function
root.bind("", lambda event=None: display_name())
# Start the Tkinter main loop
root.mainloop()

Explanation:

In the exercise above -

• Import the "tkinter" library.
• Define the “display_name()” function, which retrieves the text entered in the 'Entry' widget, and if a name is provided, it updates the 'message_label' with a message.
• Create the main window and set its title.
• Create a 'Label' widget (instruction_label) to provide instructions to the user.
• Create an 'Entry' widget (name_entry) where the user can input their name.
• Create a button (submit_button) with the label 'Submit' that, when clicked, calls the "display_name()" function.
• Create a Label widget (message_label) that initially displays an empty message but updates with the user's name when submitted.
• We bind the 'Enter' key to call the "display_name()" function, allowing the user to press Enter after entering their name.
• Finally, start the Tkinter main loop with "root.mainloop()".

Output:

Flowchart:

Python Code Editor:

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