[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ned Deily]

Ned Deily  added the comment:

Thanks, Marc and Ronald, for the analysis.

And thanks for bringing up the issue, Remy. Perhaps you can verify that 
Ronald's suggestion of importing and launching Tk before calling pyglet or 
pygame works for you and, if so, follow up with those projects to, if nothing 
else, document that requirement for their users on macOS (I would guess it 
wouldn't hurt on other platforms as well but I've guessed wrong before). In any 
case, I'm closing this issue now.

--
status: open -> closed

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ronald Oussoren]

Ronald Oussoren  added the comment:

Something I forgot to mention: I don't think this is a bug in Tk now that I've 
looked into this more deeply. 

The integration problem between Tk and other users of the Cocoa event loop is 
unfortunate but not a bug.

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ronald Oussoren]

Ronald Oussoren  added the comment:

Categories make it possible to add methods to an existing class, but not new 
attributes.  The latter shouldn't be a problem in principle for an 
NSApplication subclass because only a single instance of the application class 
will get created and you may as well use global variables for those.

In some sense categories are syntactic sugar for monkey patching existing 
classes, commonly used to add convenience methods to Cocoa classes.

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Marc Culler]

Marc Culler  added the comment:

The TKApplication class is a subclass of NSApplication which adds both
attributes and methods.  Those are used throughout the macOS port of Tk,
and as Ronald says, the unique instance of NSApplication in Tk is actually
a TKApplication.  Every macOS Application must have a unique NSApplication
object which is referenced by the global variable NSApp.  The TKApplication
subclass was part of the first Cocoa port of Tk, long before I became
involved, and it may have even been there in the Carbon days.  Subclassing
NSApplication appears to be something that Apple expects.

I don't know enough about Categories to understand how they could be used
to solve this problem.  Do they somehow make it possible to add new methods
and attributes to an existing NSApplication object at runtime?  I have
always thought of them as being syntactical in nature, as opposed to
allowing runtime modifications of an object's class after the object has
been instantiated.  But I am not an expert on Categories by any means.

- Marc

On Wed, Feb 2, 2022 at 1:54 PM Ned Deily  wrote:

>
> Ned Deily  added the comment:
>
> Thanks for looking into this, Ronald. Before we close this as a Python
> issue, perhaps Marc might have a suggestion on what should be done here
> from a Tk perspective.
>
> --
> nosy: +culler
> status: pending -> open
>
> ___
> Python tracker 
> 
> ___
>

--
nosy: +Marc.Culler

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ned Deily]

Ned Deily  added the comment:

Thanks for looking into this, Ronald. Before we close this as a Python issue, 
perhaps Marc might have a suggestion on what should be done here from a Tk 
perspective.

--
nosy: +culler
status: pending -> open

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ronald Oussoren]

Ronald Oussoren  added the comment:

I've done some more research and this is an integration issue between pyglet 
and Tk. In particular:

* Both pyglet and Tk use AppKit to implement their GUI
* AppKit uses an NSApplication class, and in particular a singleton instance of 
that class, to represent the application, which will get instantiated during 
application startup
* The Tk library uses a sublclass of NSApplication with additional 
functionality (TkApplication).
* When pyglet is started first the NSApplication singleton is an instance of 
NSApplication and not of TkApplication, but Tk's implementation assumes that 
the singleton is an instance of TkApplicationo.

A workaround for this issue is to make sure Tk is initialised before 
initialising pyglet. For example using this code at the start of the script: 
"from tkinter import Tk; root = Tk()"


There's not much we can do about this in CPython, other than maybe filing an 
issue with the Tk project about this. I haven't looked at the Tk codebase and 
there cannot tell how hard it would be for then to avoid a dependency on 
TkApplication as a separate class (for example by implementing the additional 
functionality they need in a category on NSApplication).

--
resolution:  -> third party
stage:  -> resolved
status: open -> pending

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ronald Oussoren]

Ronald Oussoren  added the comment:

Oops, sorry: In Tk itself.

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ned Deily]

Ned Deily  added the comment:

> If I interpret the information I posted earlier correctly this is a bug in 
> Tkinter [...]

Tkinter? Or Tk itself?

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ronald Oussoren]

Ronald Oussoren  added the comment:

If I interpret the information I posted earlier correctly this is a bug in 
Tkinter, it calls a non-existing Objecive-C method (``-[NSApplication 
macOSVersion]``) and that results in an uncaught Objective-C exception and 
hence an abort().

BTW. All of this is using python 3.10.2 using the installer on python.org.

--
components: +Tkinter

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ronald Oussoren]

Ronald Oussoren  added the comment:

The last bit of the call stack according to lldb:

* thread #2, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
frame #0: 0x00018b3419b8 libsystem_kernel.dylib`__pthread_kill + 8
frame #1: 0x00018b374eb0 libsystem_pthread.dylib`pthread_kill + 288
frame #2: 0x00018b2b2314 libsystem_c.dylib`abort + 164
frame #3: 0x00018b331b50 libc++abi.dylib`abort_message + 132
frame #4: 0x00018b322f64 libc++abi.dylib`demangling_terminate_handler() 
+ 332
frame #5: 0x00018b21a140 libobjc.A.dylib`_objc_terminate() + 144
frame #6: 0x00018b330ee4 libc++abi.dylib`std::__terminate(void (*)()) + 
20
  * frame #7: 0x00018b333c5c 
libc++abi.dylib`__cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*) + 36
frame #8: 0x00018b333c08 libc++abi.dylib`__cxa_throw + 140
frame #9: 0x00018b2118dc libobjc.A.dylib`objc_exception_throw + 352
frame #10: 0x00018b5531a0 CoreFoundation`-[NSObject(NSObject) 
doesNotRecognizeSelector:] + 144
frame #11: 0x00018b420360 CoreFoundation`___forwarding___ + 1728
frame #12: 0x00018b41fbe0 CoreFoundation`_CF_forwarding_prep_0 + 96
frame #13: 0x000102388a1c libtk8.6.dylib`GetRGBA + 64
frame #14: 0x0001023884a8 libtk8.6.dylib`SetCGColorComponents + 140
frame #15: 0x0001023888e0 libtk8.6.dylib`TkpGetColor + 544
frame #16: 0x0001022ea454 libtk8.6.dylib`Tk_GetColor + 220
frame #17: 0x0001022ddaa0 libtk8.6.dylib`Tk_Get3DBorder + 204
frame #18: 0x0001022dd8ac libtk8.6.dylib`Tk_Alloc3DBorderFromObj + 144
frame #19: 0x0001022eb810 libtk8.6.dylib`DoObjConfig + 832
frame #20: 0x0001022eb3cc libtk8.6.dylib`Tk_InitOptions + 348
frame #21: 0x0001022eb2c8 libtk8.6.dylib`Tk_InitOptions + 88
frame #22: 0x000102312cf0 libtk8.6.dylib`CreateFrame + 1448
frame #23: 0x000102312fe8 libtk8.6.dylib`TkListCreateFrame + 156
frame #24: 0x00010230bec0 libtk8.6.dylib`Initialize + 1848
frame #25: 0x00010026a2d4 _tkinter.cpython-310-darwin.so`Tcl_AppInit + 
92
frame #26: 0x000100269f6c _tkinter.cpython-310-darwin.so`Tkapp_New + 548
frame #27: 0x000100269d44 
_tkinter.cpython-310-darwin.so`_tkinter_create_impl + 268
frame #28: 0x00010026997c 
_tkinter.cpython-310-darwin.so`_tkinter_create + 240
frame #29: 0x000100bf71f0 Python`cfunction_vectorcall_FASTCALL + 88

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Ronald Oussoren]

Ronald Oussoren  added the comment:

Error output when running the script:

2022-02-01 22:15:32.213 Python[5468:5726153] ApplePersistenceIgnoreState: 
Existing state will not be touched. New state will be written to 
/var/folders/d3/rc5nx4v12y96knh2px3bpqscgn/T/org.python.python.savedState
2022-02-01 22:15:32.362 Python[5468:5726153] -[NSApplication macOSVersion]: 
unrecognized selector sent to instance 0x105624bc0
2022-02-01 22:15:32.367 Python[5468:5726153] *** Terminating app due to 
uncaught exception 'NSInvalidArgumentException', reason: '-[NSApplication 
macOSVersion]: unrecognized selector sent to instance 0x105624bc0'
*** First throw call stack:
(
0   CoreFoundation  0x00018b4c01cc 
__exceptionPreprocess + 240
1   libobjc.A.dylib 0x00018b2117b8 
objc_exception_throw + 60
2   CoreFoundation  0x00018b5531a0 
-[NSObject(NSObject) __retain_OA] + 0
3   CoreFoundation  0x00018b420360 
___forwarding___ + 1728
4   CoreFoundation  0x00018b41fbe0 
_CF_forwarding_prep_0 + 96
5   libtk8.6.dylib  0x000100940a1c GetRGBA + 64
6   libtk8.6.dylib  0x0001009404a8 
SetCGColorComponents + 140
7   libtk8.6.dylib  0x0001009408e0 TkpGetColor 
+ 544
8   libtk8.6.dylib  0x0001008a2454 Tk_GetColor 
+ 220
9   libtk8.6.dylib  0x000100895aa0 
Tk_Get3DBorder + 204
10  libtk8.6.dylib  0x0001008958ac 
Tk_Alloc3DBorderFromObj + 144
11  libtk8.6.dylib  0x0001008a3810 DoObjConfig 
+ 832
12  libtk8.6.dylib  0x0001008a33cc 
Tk_InitOptions + 348
13  libtk8.6.dylib  0x0001008a32c8 
Tk_InitOptions + 88
14  libtk8.6.dylib  0x0001008cacf0 CreateFrame 
+ 1448
15  libtk8.6.dylib  0x0001008cafe8 
TkListCreateFrame + 156
16  libtk8.6.dylib  0x0001008c3ec0 Initialize + 
1848
17  _tkinter.cpython-310-darwin.so  0x0001008762d4 Tcl_AppInit 
+ 92
18  _tkinter.cpython-310-darwin.so  0x000100875f6c Tkapp_New + 
548
19  _tkinter.cpython-310-darwin.so  0x000100875d44 
_tkinter_create_impl + 268
20  _tkinter.cpython-310-darwin.so  0x00010087597c 
_tkinter_create + 240
21  Python  0x00010109b1f0 
cfunction_vectorcall_FASTCALL + 88
22  Python  0x000101169f48 
call_function + 132
23  Python  0x000101161fac 
_PyEval_EvalFrameDefault + 23072
24  Python  0x00010115ad5c 
_PyEval_Vector + 360
25  Python  0x000101033dac 
_PyObject_FastCallDictTstate + 96
26  Python  0x0001010c7cbc slot_tp_init 
+ 196
27  Python  0x0001010be950 type_call + 
312
28  Python  0x000101033af4 
_PyObject_MakeTpCall + 136
29  Python  0x00010116a040 
call_function + 380
30  Python  0x000101160a18 
_PyEval_EvalFrameDefault + 17548
31  Python  0x00010115ad5c 
_PyEval_Vector + 360
32  Python  0x000101169f48 
call_function + 132
33  Python  0x000101160a18 
_PyEval_EvalFrameDefault + 17548
34  Python  0x00010115ad5c 
_PyEval_Vector + 360
35  Python  0x000101169f48 
call_function + 132
36  Python  0x000101161404 
_PyEval_EvalFrameDefault + 20088
37  Python  0x00010115ad5c 
_PyEval_Vector + 360
38  Python  0x00010115cb3c 
_PyEval_EvalFrameDefault + 1456
39  Python  0x00010115ad5c 
_PyEval_Vector + 360
40  Python  0x000101169f48 
call_function + 132
41  Python  0x000101160a18 
_PyEval_EvalFrameDefault + 17548
42  Python  0x00010115ad5c 
_PyEval_Vector + 360
43  Python  0x00010115cb3c 
_PyEval_EvalFrameDefault + 1456
44  Python  0x00010115ad5c 
_PyEval_Vector + 360
45  Python  0x00010115cb3c 
_PyEval_EvalFrameDefault + 1456
46  Python  0x00010115ad5c 
_PyEval_Vector + 360
  

[issue46573] Python modules such as pyglet or pygame crash Python when tkinter message boxes are opened on MacOS.

[Remy Fouquette]

New submission from Remy Fouquette :

The same problem doesn't exist on Windows.

--
components: macOS
files: issue.py
messages: 412093
nosy: ned.deily, remyrfouquette, ronaldoussoren
priority: normal
severity: normal
status: open
title: Python modules such as pyglet or pygame crash Python when tkinter 
message boxes are opened on MacOS.
type: crash
versions: Python 3.10
Added file: https://bugs.python.org/file50597/issue.py

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com