2. tk button

This code creates a simple GUI application using the Tkinter library.

It displays a window with a label and a button. When the button is clicked, the text of the label changes.

The mainloop function starts the main event loop for the window, allowing it to respond to user interactions.

This code creates a simple GUI application using the Tkinter library in Python. It displays a window with a label and a button. When the button is clicked, the text of the label changes. The mainloop function starts the main event loop for the window, allowing it to respond to user interactions.

Step 1: Import the Tkinter library

from tkinter import *

Step 2: Create a new window

window = Tk()

Step 3: Set the title of the window

window.title("Button to change label app")

Step 4: Set the size of the window

window.geometry("350x400")

Step 5: Create a new label widget and add it to the window

lbl = Label(window, text="Original text")

Step 6: Position the label in the window using a grid layout

lbl.grid(column=0, row=0)

Step 7: Define a function that changes the text of the label

def clicked():
    lbl.configure(text="Button changed text!")

Step 8: Create a new button widget and add it to the window

btn = Button(window, text="Click Me to change text", command=clicked)

Step 9: Position the button in the window using a grid layout

btn.grid(column=1, row=0)

Step 10: Start the main event loop for the window

window.mainloop()

Full code:

# Import all classes, functions, and variables from the Tkinter library
from tkinter import *

# Create a new window
window = Tk()
# Set the title of the window
window.title("Button to change label app")
# Set the size of the window
window.geometry('350x400')

# Create a new label widget and add it to the window
lbl = Label(window, text="Original text")
# Position the label in the window using a grid layout
lbl.grid(column=0, row=0)

# Define a function that changes the text of the label
def clicked():
    lbl.configure(text="Button changed text!")

# Create a new button widget and add it to the window
btn = Button(window, text="Click Me to change text", command=clicked)
# Position the button in the window using a grid layout
btn.grid(column=1, row=0)

# Start the main event loop for the window
window.mainloop()