python tkinter rectangle code example

Example 1: rectangle in tkinter

from tkinter import *

root = Tk()

c = Canvas(root)
c.pack()
c.create_rectangle(100, 100, 200, 200)

root.mainloop()

Example 2: python tkinter messagebox

import tkinter
from tkinter import messagebox
# hide main window
root = tkinter.Tk()
# message box display
messagebox.showerror("Error", "Error message")
messagebox.showwarning("Warning","Warning message")
messagebox.showinfo("Information","Informative message")