CODEWITHSUNDEEP
pythontkinterturtle-graphics
intelis
intelis

Reputation: 8068

Python turtle throws an error on close

I have this simple program made with Python 2.7.5. Basically I'm just drawing bunch of random stuff to the screen, but when I close the canvas I get a weird error.

import turtle
import random
import time

turtle.hideturtle()

class Mus:

    def __init__(self):
        turtle.setx(random.randint(1,100))
        turtle.sety(random.randint(1,100))
        turtle.circle(random.randint(1,100))

while True:
    Mus()

turtle.exitonclick()

When I close the program, I get this error:

Traceback (most recent call last):
  File "/Users/jurehotujec/Desktop/running.py", line 15, in <module>
    Mus()
  File "/Users/jurehotujec/Desktop/running.py", line 12, in __init__
    turtle.circle(random.randint(1,100))
  File "<string>", line 1, in circle
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/turtle.py", line 1908, in circle
    self._rotate(w)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/turtle.py", line 3110, in _rotate
    self._update()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/turtle.py", line 2564, in _update
    self._update_data()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/turtle.py", line 2555, in _update_data
    self._pencolor, self._pensize)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/turtle.py", line 569, in _drawline
    self.cv.coords(lineitem, *cl)
  File "<string>", line 1, in coords
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/Tkinter.py", line 2240, in coords
    self.tk.call((self._w, 'coords') + args)))
TclError: invalid command name ".4335016920"

What am I doing wrong? I'm new to python so any help would be appreciated :)

Thanks

Upvotes: 2

Views: 1785

Answers (2)

Bhargav
Bhargav

Reputation: 4286

Try this

from turtle import *

tim = Turtle()

my_screen = Screen()

#my_screen.exitonclick()

tim.forward(100)
my_screen.exitonclick()

Upvotes: 0

Aivar
Aivar

Reputation: 7052

Seems that your loop tries to continue after Tk has destroyed some important objects. You could signal the closing event via a flag:

import turtle
import random
import time
import Tkinter as tk



turtle.hideturtle()

closed = False
def on_close():
    global closed
    closed = True
    exit()

# Register hander for close event    
tk._default_root.protocol("WM_DELETE_WINDOW", on_close)


class Mus:

    def __init__(self):
        turtle.setx(random.randint(1,100))
        turtle.sety(random.randint(1,100))
        turtle.circle(random.randint(1,100))

# check the flag
while not closed:
    Mus()





turtle.exitonclick()

Upvotes: 2

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