Tkinter tortues et Threads

Question

monde! Dans les graphiques de tortues en python, il est possible de créer divers objets de tortue et les manipuler avec leurs méthodes, en avant, en arrière ... Je voulais expérimenter avec des fils j'ai donc écrit une classe filetée appelée MyTurtleManipulator.

from threading import Thread
from cTurtle import Turtle 
import random

class MyTurtleManipulator(Thread):
  def __init__(self, turtle):
    Thread.__init__(self)
    self.turtle=turtle
  def run(self):
    actions=[Turtle.forward, Turtle.right, Turtle.left]    
    while True:      
      action=random.choice(actions)      
      action(self.turtle, random.randint(1,25))

turtles=[Turtle() for i in range(5)]
threads=[MyTurtleManipulator(turtle) for turtle in turtles]

for thread in threads:
  print(thread)
  thread.start()

Avec l'expérience, je pensais voir toutes les tortues en mouvement « en même temps » et au hasard, mais quand je lance le programme i obtenir ces erreurs:

<MyTurtleManipulator(Thread-1, initial)>
<MyTurtleManipulator(Thread-2, initial)>
<MyTurtleManipulator(Thread-3, initial)>
<MyTurtleManipulator(Thread-4, initial)>
<MyTurtleManipulator(Thread-5, initial)>
>>> Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python3.1/threading.py", line 516, in _bootstrap_inner
    self.run()
  File "/home/rfrm/test.py", line 13, in run
    action(self.turtle, random.randint(1,25))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 1162, in forward
    checkargs((int, float))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 1131, in _go
    ende = self._position + self._orient * distance
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 2266, in _goto
    (start, self._position),
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 419, in _drawline
    cl.append(-y)
  File "<string>", line 1, in coords
  File "/usr/lib/python3.1/tkinter/__init__.py", line 2123, in coords
    self.tk.call((self._w, 'coords') + args)))
RuntimeError: main thread is not in main loop

Exception in thread Thread-2:
Traceback (most recent call last):
  File "/usr/lib/python3.1/threading.py", line 516, in _bootstrap_inner
    self.run()
  File "/home/rfrm/test.py", line 13, in run
    action(self.turtle, random.randint(1,25))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 1203, in right
    checkargs((int, float))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 2300, in _rotate
    self._orient = self._orient.rotate(delta)
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 2085, in _update
    for t in screen._turtles:
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 2219, in _drawturtle
    screen._drawpoly(titem, shape, fill=fc, outline=oc,
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 384, in _drawpoly
    cl.append(-y)
  File "<string>", line 1, in coords
  File "/usr/lib/python3.1/tkinter/__init__.py", line 2123, in coords
    self.tk.call((self._w, 'coords') + args)))
RuntimeError: main thread is not in main loop

Exception in thread Thread-3:
Traceback (most recent call last):
  File "/usr/lib/python3.1/threading.py", line 516, in _bootstrap_inner
    self.run()
  File "/home/rfrm/test.py", line 13, in run
    action(self.turtle, random.randint(1,25))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 1162, in forward
    checkargs((int, float))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 1131, in _go
    ende = self._position + self._orient * distance
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 2270, in _goto
    screen._drawline(self.drawingLineItem, ((0, 0), (0, 0)),
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 419, in _drawline
    cl.append(-y)
  File "<string>", line 1, in coords
  File "/usr/lib/python3.1/tkinter/__init__.py", line 2123, in coords
    self.tk.call((self._w, 'coords') + args)))
RuntimeError: main thread is not in main loop

Exception in thread Thread-4:
Traceback (most recent call last):
  File "/usr/lib/python3.1/threading.py", line 516, in _bootstrap_inner
    self.run()
  File "/home/rfrm/test.py", line 13, in run
    action(self.turtle, random.randint(1,25))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 1162, in forward
    checkargs((int, float))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 1131, in _go
    ende = self._position + self._orient * distance
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 2270, in _goto
    screen._drawline(self.drawingLineItem, ((0, 0), (0, 0)),
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 419, in _drawline
    cl.append(-y)
  File "<string>", line 1, in coords
  File "/usr/lib/python3.1/tkinter/__init__.py", line 2123, in coords
    self.tk.call((self._w, 'coords') + args)))
RuntimeError: main thread is not in main loop

Exception in thread Thread-5:
Traceback (most recent call last):
  File "/usr/lib/python3.1/threading.py", line 516, in _bootstrap_inner
    self.run()
  File "/home/rfrm/test.py", line 13, in run
    action(self.turtle, random.randint(1,25))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 1203, in right
    checkargs((int, float))
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 2300, in _rotate
    self._orient = self._orient.rotate(delta)
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 2085, in _update
    for t in screen._turtles:
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 2219, in _drawturtle
    screen._drawpoly(titem, shape, fill=fc, outline=oc,
  File "/usr/local/lib/python3.1/dist-packages/cTurtle.py", line 384, in _drawpoly
    cl.append(-y)
  File "<string>", line 1, in coords
  File "/usr/lib/python3.1/tkinter/__init__.py", line 2123, in coords
    self.tk.call((self._w, 'coords') + args)))
RuntimeError: main thread is not in main loop

Qu'est-ce que cela signifie, qu'est-ce que « thread principal n'est pas en boucle principale » signifie. Nous vous remercions de votre aide.

Answer 1

cela semble être un python / tkinter limitation comme décrit ici , la tortue et les discussions ne sont pas amis

Answer 2

a ses limites, mais peut-être encore possible. La réponse est dans votre messges d'erreur:

RuntimeError: fil conducteur se trouve pas dans la boucle principale

Limitez vos opérations tortue / Tkinter au fil principal. Dans mon réusinage de votre exemple ci-dessous, je l'ai utilisé le coffre-fort de fil file structure de données pour communiquer entre les fils et la tortue:

from threading import Thread, active_count
from turtle import Turtle, Screen
import queue
import random

QUEUE_SIZE = 1  # set higher the more hardware threads you have
ACTIONS = [Turtle.forward, Turtle.right, Turtle.left]
COLORS = ['red', 'black', 'blue', 'green', 'magenta']

class MyTurtleManipulator(Thread):

    def __init__(self, turtle):
        super().__init__()
        self.turtle = turtle

    def run(self):
        for _ in range(100):
            actions.put((self.turtle, random.choice(ACTIONS), random.randint(1, 30)))

def process_queue():
    while not actions.empty():
        turtle, action, argument = actions.get()
        action(turtle, argument)

    if active_count() > 1:
        screen.ontimer(process_queue, 100)

actions = queue.Queue(QUEUE_SIZE)

for color in COLORS:
    turtle = Turtle('turtle')
    turtle.color(color)
    turtle.setheading(random.randint(0, 360))
    MyTurtleManipulator(turtle).start()

screen = Screen()

process_queue()

screen.mainloop()

Je mis la QUEUE_SIZE à 1 que je suis sur une machine avec seulement deux fils! Je suis curieux de savoir si tout fonctionne correctement sur une machine avec plus de fils et un QUEUE_SIZE ~ = #threads - 1