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Enoncé des 4 exercices et Corrigé

Utilisation

Lancez le script puis molnar(1) pour l’exercice 1, molnar(2) pour l’exercice 2 etc.

from turtle import *
from random import *
from math import sin, cos, pi
from kandinsky import fill_rect

speed(0)
hideturtle()

def melange(v):
    return sorted(v, key=lambda _: random())

def forme(n):
 trace=[127,25,45,14,346,21,113,38]
 pensize(n)
 pendown() 
 for i in range(len(trace)/2):
  setheading(trace[2*i])
  forward(trace[2*i+1])

def molnar1():
 for c in range(15):
  l = melange(list(range(3)))
  u, v = -140 + 20 * c, -100 + randint(1,48)
  for y in range(3):
   penup()
   goto(u, v + 48 * y)
   forme(l[y]+1)

  
def case(k,n,d):
  return [d * (k % n), d * int(k / n)]  

def molnar2(N = 8):
  x, y = -130,-110
  for j in range(N*N):
   l = melange(list(range(N*N)))
   [x1,y1] = case(j,N,30)
   color((randint(0,255),randint(0,255),randint(0,255)))
   for i in range(N*N):
      [x2,y2] = case(l[i],N,5)
      penup() if i == 0 else pendown()
      goto(x + x1 + x2, y + y1 + y2)

def molnar3(d = 6):
  pensize(2)
  for y in range(16):
    penup()
    goto(-160, -110 + 15 * y)
    pendown()
    while position()[0] < 160:
      if random() < .1:
        [x,y] = position()  
        a = randint(0,90)
        co, si = d * cos(pi * a / 180), d * sin(pi * a / 180)
        penup()
        goto(x, y - si)
        setheading(a)
        pendown()
        forward(2 * d)
        penup()
        goto(min(160,x + 2 * co), y)
        pendown()
      else: 
        setheading(0)
        forward(2 * d)

def molnar4():
  pensize(1)
  for y in range(20): 
    penup()
    goto(-150, 90 - 10 * y)
    pendown()
    while position()[0] < 130:
      [x,y] = position()
      a = randint(10,60)
      d = randint(3, 3 + int((x + 150) / 10))
      setheading(a)
      forward(d)
      goto(x + randint(3,7),y)

def molnar(n):
  fill_rect(0,0,320,222,(230,224,205))
  eval("molnar"+str(n))()