Python Tkinter: Creating a custom input dialog

Python Tkinter Dialogs and File Handling: Exercise-5 with Solution

Write a Python program to implement a custom input dialog that prompts the user to input their name and displays it in a label using Tkinter.

Sample Solution:

Python Code:

import tkinter as tk
from tkinter import simpledialog

def show_name_dialog():
    name = simpledialog.askstring("Input", "Input your name:")
    if name:
        name_label.config(text=f"Hello, {name}!")

parent = tk.Tk()
parent.title("Input Dialog Example")

get_name_button = tk.Button(parent, text="Get Name", command=show_name_dialog)
get_name_button.pack(padx=20, pady=20)

name_label = tk.Label(parent, text="", padx=20, pady=10)
name_label.pack()

parent.mainloop()

Explanation:

In the exercise above -

• Import "tkinter" as "tk" and "simpledialog" for creating the GUI components and the custom input dialog.
• Define the "show_name_dialog()" function, which uses simpledialog.askstring() to display a custom input dialog titled "Input" with a prompt to "Input your name." The user's input (name) is stored in the name variable. If a name is provided, it updates a label with a greeting message.
• Create the main Tkinter window, set its title, and create a button labeled "Get Name" that calls the "show_name_dialog()" function when clicked.
• Create a label to display the greeting message with some padding.
• The main event loop, parent.mainloop(), starts the Tkinter application.

Sample Output:

Flowchart:

Python Code Editor:

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