How to Create welcome message in Tkinter Application.

We welcome you to our Tkinter tutorial! This application demonstrates how to create a simple graphical user interface (GUI) with Python Tkinter.
Our goal is to create a program that welcomes users with a message when they press a button. We will use Tkinter, a popular Python library for creating GUIs. We will utilize two widgets: a “Click Me” button and a label to show text.
Initially, the label would not display any text. When you click the button, it will display the message “Welcome to Python Programming World!” in bold type. Let’s develop our first Tkinter app!

import tkinter as tkter
# First Line Code – Create the main Tkinter window
root = tkter.Tk()
# Defined and Set the title and name of the window
root.title(“Welcome Message for Tkinter Real Time Project”)
# Below line of code will define a bold font for the label
bold_font = (“Arial”, 20, “bold”)
# This Below line of code will create a Button with a command to update the label text
button = tkter.Button(root, text=”Click Here”, command=lambda:
welcome_label.config(text=”Welcome to Python Tkinter real time project”))
button.pack() # Place the button in the window
# Creating a label with an empty text and the specified bold font
welcome_label = tkter.Label(root, text=””, font=bold_font)
welcome_label.pack() # Place the label in the window
# Start the Tkinter event loop
root.mainloop()

import tkinter as tkter
# First Line Code - Create the main Tkinter window
root = tkter.Tk()
# Defined and Set the title and name of the window
root.title("Welcome Message for Tkinter Real Time Project")
# Below line of code will define a bold font for the label
bold_font = ("Arial", 20, "bold")
# Creating a button with a command to update the label text
button = tkter.Button(root, text="Click Here", command=lambda:
welcome_label.config(text="Welcome to Python Tkinter real time project"))
button.pack() # Place the button in the window
# Creating a label with an empty text and the specified bold font
welcome_label = tkter.Label(root, text="", font=bold_font)
welcome_label.pack() # Place the label in the window
# Start the Tkinter event loop
root.mainloop()

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https://docs.python.org/3/library/tkinter.html