Version plus générale :
import turtle
from random import *
t = turtle.Turtle()
t.speed(0)
t.hideturtle()
p = 3
w, h = 400, 300
wn = turtle.Screen()
wn.setup(2 * w, 2 * h)
wn.colormode(255)
wn.tracer(0)
c = -w
c1, c2 = (60,200,230), (30,) *3
rvb = [0,0,0]
t.speed(0)
def T(u,a1,a2,b1,b2): return int((b2-b1)/(a2-a1)*(u-a1)+b1)
while c < w:
l = -h
t.pensize(1)
for i in range(3): rvb[i] = T(c,-w,w,c1[i],c2[i])
t.pencolor((rvb[0],rvb[1],rvb[2]))
while l < 1.1 * h:
t.penup()
t.goto(c,l)
t.pendown()
t.setheading(choice((randint(-60,-30),randint(-150,-120))))
t.fd(p*1.414)
l += 3
p += 1
c += 5
wn.update()
from turtle import * from random import choice, randint speed(0) t = 3 c = -160 c1, c2 = (60,200,230), (30,) *3 rvb = [0,0,0] def T(u,a1,a2,b1,b2): return (b2-b1)/(a2-a1)*(u-a1)+b1 while c < 170: l = -110 pensize(1) for i in range(3): rvb[i] = T(c,-160,170,c1[i],c2[i]) pencolor((rvb[0],rvb[1],rvb[2])) while l < 150: penup() goto(c,l) pendown() setheading(choice((randint(-60,-30),randint(-150,-120)))) fd(t*1.414) l += 3 t += 2 c += 5