listing_7_12.py

"""
Приложение «hello world» на Tkinter
"""
import tkinter
from tkinter import ttk

window = tkinter.Tk()
window.title("Hello World App")
window.geometry("200x100")


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


hello_button = ttk.Button(window, text="Say Hello", command=say_hello)
hello_button.pack()

window.mainloop()