Scott M <[email protected]> added the comment:
OK, now all calls to Tkinter are funneled to a single thread, through a queue.
(Technically there are two threads in Tkinter - one is parked in .mainloop(),
the other makes a call to Canvas.create_line and a call to Label.config.)
Different crash, but still a crash. This one seems to be mostly consistent; see
below and new attached code.
If you're going to tell me that Tkinter simply can never be called by any
thread other than the one animating mainloop - in other words, Tkinter calls
are only safe within Tkinter callbacks like a Button's command function - then
please suggest an alternative library that is sturdier. There's nothing I can
do about the fact that multiple threads produce independent data that has to go
onto a single graph.
Exception in thread Thread-1:
Traceback (most recent call last):
File "C:\Python27\lib\threading.py", line 530, in __bootstrap_inner
self.run()
File "C:\Documents and
Settings\mayos\Desktop\PMT2\MyProjects\TkinterCrash.py", line 68, in run
self.graph.create_line(element[0], element[1], element[2], element[3])
File "C:\Python27\lib\lib-tk\Tkinter.py", line 2201, in create_line
return self._create('line', args, kw)
File "C:\Python27\lib\lib-tk\Tkinter.py", line 2189, in _create
*(args + self._options(cnf, kw))))
ValueError: invalid literal for int() with base 10: 'None'
But once I got:
Exception in thread Thread-1:
Traceback (most recent call last):
File "C:\Python27\lib\threading.py", line 530, in __bootstrap_inner
self.run()
File "C:\Documents and
Settings\mayos\Desktop\PMT2\MyProjects\TkinterCrash2.py", line 68, in run
self.graph.create_line(element[0], element[1], element[2], element[3])
File "C:\Python27\lib\lib-tk\Tkinter.py", line 2201, in create_line
return self._create('line', args, kw)
File "C:\Python27\lib\lib-tk\Tkinter.py", line 2189, in _create
*(args + self._options(cnf, kw))))
TclError: can not find channel named "Nonefile13cad48"
----------
Added file: http://bugs.python.org/file20576/TkinterCrash2.py
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<http://bugs.python.org/issue11029>
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