Turtle Rasa Obiektów

import turtle
import random

random.seed(5)
screen = turtle.Screen()
screen.setup(500, 400)

class Uchastnik:
    def __init__(self, cvet, startovyj_y):
        self.t = turtle.Turtle()
        self.t.shape("turtle")
        self.t.color(cvet)
        self.t.penup()
        self.t.goto(-200, startovyj_y)
        self.cvet = cvet

    def sdelat_shag(self):
        self.t.forward(random.randint(1, 10))

    def finishiroval(self, finish_line):
        return self.t.xcor() >= finish_line

cveta = ["red", "blue", "green", "orange"]
uchastniki = [Uchastnik(cvet, i * 40 - 60) for i, cvet in enumerate(cveta)]

pobeditel = None
while pobeditel is None:
    for u in uchastniki:
        u.sdelat_shag()
        if u.finishiroval(200):
            pobeditel = u.cvet
            break

screen.exitonclick()