Вправа 2. (ст.188)

from tkinter import *

tk=Tk()

canvas=Canvas(tk,width=500,height=500)

x=0

y=60

a=50

b=100

while x<500:

    canvas.create_line(x,y,x+a,y, width=4, fill='red')

    canvas.create_line(x+a,y,x+a,y-b, width=4, fill='green')

    canvas.create_line(x+a,y-b,x+a+b,y-b)

    canvas.create_line(x+a+b,y-b,x+a+b,y,width=4, fill='green')

    x=x+a+b

canvas.pack()