tkinter pack functions

from tkinter import *

root = Tk()

root.geometry("800x600")

Label(root, text="heading1", relief=GROOVE).pack(side=LEFT, fill=BOTH, expand=True)

Label(root, text="heading2", relief=GROOVE).pack(side=BOTTOM, fill=BOTH, expand=True)

for i in range(5):

    Label(root, text=str(i), relief=GROOVE).pack(side=RIGHT,fill=BOTH, expand=True)

root.mainloop()

tkinter pack