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Python GUI Programming with Tkinter

Tkinter is the standard GUI library for Python. Python when combined with Tkinter provides a fast and easy way to create GUI applications.

Importing the Module

import tkinter as tk

Creating a Basic Window

To create a GUI application, you start by creating the main window.

import tkinter as tk

root = tk.Tk()
root.title("My First GUI")
root.geometry("300x200")

root.mainloop()

Widgets

Widgets are the building blocks of a GUI application.

Label

label = tk.Label(root, text="Hello, Tkinter!")
label.pack()

Button

def on_click():
    print("Button clicked!")

button = tk.Button(root, text="Click Me", command=on_click)
button.pack()

Entry

entry = tk.Entry(root)
entry.pack()

Layout Managers

Tkinter provides three main layout managers to arrange widgets: pack(), grid(), and place().

pack()

Organizes widgets in blocks before placing them in the parent widget.

label.pack(side=tk.TOP)
button.pack(side=tk.BOTTOM)

grid()

Organizes widgets in a table-like structure.

label.grid(row=0, column=0)
button.grid(row=1, column=1)

Event Handling

You can bind functions to events (like button clicks) using the command parameter or the bind() method.

def greet():
    print("Hello!")

btn = tk.Button(root, text="Greet", command=greet)
btn.pack()

programming/python/python