# tkinter is GUI-package for python. Tkinter has widgets for GUI elements.
from tkinter import *

# Tk() set ups a new blank window
blankWindow = Tk()

# Label equals basic text, setting it in the blankWindow
textLabel = Label(blankWindow, text="Hello world!")

# pack is geometry manager which organizes widgets in block before placing them in the parent widget
textLabel.pack()

# this keeps blankWindow in loop as long as it's closed manually
blankWindow.mainloop()