from turtle import *
import random

#--------------
running = True

def beenden():
    global running
    running = False

listen()
onkey(beenden, "Escape")
#--------------

colors = ["#1CA195", "#277B72", "#277B61", "#AE5B28"]
pensize(3)
speed(0)
hideturtle()
tracer(0,0)
color(colors[0])
while running:                   #--------------------
    for i in range(4):
        fd(50)
        lt(90)
    lt(1)
    update()
    clear()

update()
done()