Terry J. Reedy added the comment:
Summarizing other messages, it seems that tkinter is intended to be thread-safe
(as long tk.mainloop is started in the tk thread) and mostly is until it is not
(probably from timing issue). With fresh 2.7.8 install, I ran TkinterCrash2.py.
I got the following twice:
Exception in thread Thread-12:
Traceback (most recent call last):
File "C:\Programs\Python27\lib\threading.py", line 810, in __bootstrap_inner
self.run()
File "tkcrash2.py", line 49, in run
self.deliverToQueue((self.target, z, y))
File "tkcrash2.py", line 131, in arrival_122
new_yz[1])
File "C:\Programs\Python27\lib\lib-tk\Tkinter.py", line 2282, in create_line
return self._create('line', args, kw)
File "C:\Programs\Python27\lib\lib-tk\Tkinter.py", line 2270, in _create
*(args + self._options(cnf, kw))))
ValueError: invalid literal for int() with base 10: 'None'
and the progrm continued. After another 100-200 launches, I tried to close the
tk window and got the "python has stopped working" message from Windows. After
this, every time I restart, I soon got the message again. Something seems to
have been altered, though I do not see a relevant process in task manager.
I closed and reopened the command prompt process and restarted with pythonw
instead of python and the program ran until too sluggish to continue. I then
closed and reran and got 'pythonw has stopped working' at about launch 5. Third
time ran until I closed at 50 launches. Fourth time stopped after 10 launches.
Serhiy, have any fresh insight?
----------
nosy: +serhiy.storchaka
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<http://bugs.python.org/issue11077>
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