How do we delete a shape that's already been created in Tkinter canvas?

Question

Consider:

from Tkinter import *


a = Tk()

canvas = Canvas(a, width = 500, height = 500)
canvas.pack()

canvas.create_rectangle(0, 0, 100, 100)

Answer 1

Assign the create_rectangle() to a variable, and then call canvas.delete() on that variable:

from Tkinter import *


a = Tk()

canvas = Canvas(a, width = 500, height = 500)
canvas.pack()

myrect = canvas.create_rectangle(0,0,100,100)
canvas.delete(myrect) #Deletes the rectangle

Window before deletion:

Window after deletion: