Создание светофора

from tkinter import *
import time
root = Tk()
root.title("Светофор")
c = Canvas(root, width=70, height=190,bg="black")
r=c.create_oval(10, 10, 60, 60,fill="red")
yellow=c.create_oval(10, 70, 60, 120,fill="yellow")
root.update()
time.sleep(3)
g=c.create_oval(10, 130, 60, 180,fill="green")
c.pack()
root.mainloop()

from tkinter import *
import time
 
 
class Frame(Tk):
 
    def __init__(self):
        self.state = 0
        super().__init__()
        self.title('Светофор')
        self.canvas = c = Canvas(self, width=70, height=190, bg="black")
        self.r = c.create_oval(10, 10, 60, 60, fill="#ff0000")
        self.y = c.create_oval(10, 70, 60, 120, fill="#808000")
        self.g = c.create_oval(10, 130, 60, 180, fill="#008000")
        c.pack()
        self.update()
        self.after(3000, self.upd)
 
    def upd(self):
        if self.state == 0:
            self.state = 1
            self.canvas.itemconfigure(self.r, fill='#800000')
            self.canvas.itemconfigure(self.y, fill='#ffff00')
            self.after(500, self.upd)
        elif self.state == 1:
            self.state = 2
            self.canvas.itemconfigure(self.y, fill='#808000')
            self.canvas.itemconfigure(self.g, fill='#00ff00')
            self.after(2000, self.upd)
        elif self.state == 2:
            self.state = 3
            self.canvas.itemconfigure(self.g, fill='#008000')
            self.canvas.itemconfigure(self.y, fill='#ffff00')
            self.after(750, self.upd)
        else:
            self.state = 0
            self.canvas.itemconfigure(self.r, fill='#ff0000')
            self.canvas.itemconfigure(self.y, fill='#808000')
            self.after(3000, self.upd)
 
root = Frame()
root.mainloop()