%matplotlib osx crashses

[Carreau]

See https://github.com/jupyter/jupyter_console/issues/294 and https://github.com/jupyterlab/jupyterlab/issues/14653

Original reporter is @ubaldot

Output of %matplotlib osx gives the following error message:

2023-05-03 19:46:24.850 python[46916:7042851] *** Assertion failure in +[NSEvent otherEventWithType:location:modifierFlags:timestamp:windowNumber:context:subtype:data1:data2:], NSEvent.m:647
2023-05-03 19:46:24.852 python[46916:7042851] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: _NSEventMask64FromType(type) & WeirdMask'
*** First throw call stack:
(
    0   CoreFoundation                      0x00000001aa69319c __exceptionPreprocess + 176
    1   libobjc.A.dylib                     0x00000001aa1b24d4 objc_exception_throw + 60
    2   Foundation                          0x00000001ab645b88 -[NSCalendarDate initWithCoder:] + 0
    3   AppKit                              0x00000001ad9dad50 +[NSEvent otherEventWithType:location:modifierFlags:timestamp:windowNumber:context:subtype:data1:data2:] + 264
    4   libffi.8.dylib                      0x0000000105ac404c ffi_call_SYSV + 76
    5   libffi.8.dylib                      0x0000000105ac1790 ffi_call_int + 1256
    6   _ctypes.cpython-310-darwin.so       0x0000000105aa4a30 _ctypes_callproc + 1324
    7   _ctypes.cpython-310-darwin.so       0x0000000105a9ebf8 PyCFuncPtr_call + 1160
    8   python3.10                          0x0000000104ed2294 _PyObject_MakeTpCall + 612
    9   python3.10                          0x0000000104fc10f0 call_function + 676
    10  python3.10                          0x0000000104fbce58 _PyEval_EvalFrameDefault + 26500
    11  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    12  python3.10                          0x0000000104fc1058 call_function + 524
    13  python3.10                          0x0000000104fbce58 _PyEval_EvalFrameDefault + 26500
    14  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    15  _ctypes.cpython-310-darwin.so       0x0000000105aa2e0c closure_fcn + 644
    16  libffi.8.dylib                      0x0000000105ac1b6c ffi_closure_SYSV_inner + 796
    17  libffi.8.dylib                      0x0000000105ac41d4 ffi_closure_SYSV + 52
    18  CoreFoundation                      0x00000001aa63448c __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 32
    19  CoreFoundation                      0x00000001aa634134 __CFRunLoopDoTimer + 940
    20  CoreFoundation                      0x00000001aa633c8c __CFRunLoopDoTimers + 356
    21  CoreFoundation                      0x00000001aa61941c __CFRunLoopRun + 1852
    22  CoreFoundation                      0x00000001aa61858c CFRunLoopRunSpecific + 612
    23  HIToolbox                           0x00000001b3e4ddf4 RunCurrentEventLoopInMode + 292
    24  HIToolbox                           0x00000001b3e4dc30 ReceiveNextEventCommon + 648
    25  HIToolbox                           0x00000001b3e4d988 _BlockUntilNextEventMatchingListInModeWithFilter + 76
    26  AppKit                              0x00000001ad837f58 _DPSNextEvent + 636
    27  AppKit                              0x00000001ad8370f4 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 716
    28  AppKit                              0x00000001ad82b558 -[NSApplication run] + 464
    29  libffi.8.dylib                      0x0000000105ac404c ffi_call_SYSV + 76
    30  libffi.8.dylib                      0x0000000105ac1790 ffi_call_int + 1256
    31  _ctypes.cpython-310-darwin.so       0x0000000105aa4a30 _ctypes_callproc + 1324
    32  _ctypes.cpython-310-darwin.so       0x0000000105a9ebf8 PyCFuncPtr_call + 1160
    33  python3.10                          0x0000000104ed2294 _PyObject_MakeTpCall + 612
    34  python3.10                          0x0000000104fc10f0 call_function + 676
    35  python3.10                          0x0000000104fbce58 _PyEval_EvalFrameDefault + 26500
    36  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    37  python3.10                          0x0000000104fc1058 call_function + 524
    38  python3.10                          0x0000000104fbce58 _PyEval_EvalFrameDefault + 26500
    39  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    40  python3.10                          0x0000000104fc1058 call_function + 524
    41  python3.10                          0x0000000104fbce58 _PyEval_EvalFrameDefault + 26500
    42  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    43  python3.10                          0x000000010506ab04 partial_vectorcall + 396
    44  python3.10                          0x0000000104fc1058 call_function + 524
    45  python3.10                          0x0000000104fbce58 _PyEval_EvalFrameDefault + 26500
    46  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    47  python3.10                          0x0000000104ed5aac method_vectorcall + 516
    48  python3.10                          0x0000000104fd9b78 context_run + 348
    49  python3.10                          0x0000000104f258a8 cfunction_vectorcall_FASTCALL_KEYWORDS + 112
    50  python3.10                          0x0000000104fbd160 _PyEval_EvalFrameDefault + 27276
    51  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    52  python3.10                          0x0000000104fc1058 call_function + 524
    53  python3.10                          0x0000000104fbcdc0 _PyEval_EvalFrameDefault + 26348
    54  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    55  python3.10                          0x0000000104fc1058 call_function + 524
    56  python3.10                          0x0000000104fbcdc0 _PyEval_EvalFrameDefault + 26348
    57  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    58  python3.10                          0x0000000104fc1058 call_function + 524
    59  python3.10                          0x0000000104fbcdc0 _PyEval_EvalFrameDefault + 26348
    60  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    61  python3.10                          0x0000000104fc1058 call_function + 524
    62  python3.10                          0x0000000104fbcdc0 _PyEval_EvalFrameDefault + 26348
    63  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    64  python3.10                          0x0000000104fc1058 call_function + 524
    65  python3.10                          0x0000000104fbcdc0 _PyEval_EvalFrameDefault + 26348
    66  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    67  python3.10                          0x0000000104ed594c method_vectorcall + 164
    68  python3.10                          0x0000000104fc1058 call_function + 524
    69  python3.10                          0x0000000104fbcde8 _PyEval_EvalFrameDefault + 26388
    70  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    71  python3.10                          0x0000000104fb5590 PyEval_EvalCode + 120
    72  python3.10                          0x0000000104fb1108 builtin_exec + 836
    73  python3.10                          0x0000000104f259e4 cfunction_vectorcall_FASTCALL + 200
    74  python3.10                          0x0000000104fc1058 call_function + 524
    75  python3.10                          0x0000000104fbce58 _PyEval_EvalFrameDefault + 26500
    76  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    77  python3.10                          0x0000000104fc1058 call_function + 524
    78  python3.10                          0x0000000104fbce58 _PyEval_EvalFrameDefault + 26500
    79  python3.10                          0x0000000104fb5dc8 _PyEval_Vector + 2056
    80  python3.10                          0x0000000105035164 pymain_run_module + 272
    81  python3.10                          0x00000001050347a0 Py_RunMain + 1584
    82  python3.10                          0x0000000105035c50 pymain_main + 1272
    83  python3.10                          0x0000000104e7c00c main + 56
    84  dyld                                0x00000001aa1e3f28 start + 2236
)
libc++abi: terminating due to uncaught exception of type NSException
/Users/ubaldot/opt/miniconda3/envs/myenv/lib/python3.10/site-packages/jupyter_console/ptshell.py:787: UserWarning: The kernel did not respond to an is_complete_request. Setting `use_kernel_is_complete` to False.
  warn('The kernel did not respond to an is_complete_request. '

I tried to run %matplotlib` both in a IPython and a Jupyter console, getting the following outputs:

• Using matplotlib backend: MacOSX (IPython)
• Using matplotlib backend: <object object at 0x104853730>(Jupyter console)

the consequence is that plots in IPython are interactive whereas plots in Jupyter console are rendered as a simple .png. Example code follows if you want to test:

import matplotlib.pyplot as plt
import matplotlib
x = list(range(1,5))
y = list(map(lambda x: x**2, x))
plt.plot(x,y)

I am running Jupyter console 6.6.3, Python 3.10.8, IPython 8.12.0 with pyqt 5.51.7 installed through conda on Mac Os Ventura.

[ianthomas23]

This is still a problem on an M3 running Sonoma 14.4.1 and Python 3.12.3, IPython 8.23.0, ipykernel 6.29.4 and Matplotlib 3.8.4. Using %matplotlib osx in IPython works fine, but the same in Jupyter console, qtconsole, notebook or spyder gives the exception reported previously. Using import matplotlib as mpl; mpl.use("macosx") in these projects works as expected. So it does indeed appear to be a problem relating to the osx event-loop integration in ipykernel.

[ivanlen]

Same problem here:

• M3
• Sonoma 14.4.1
• Python 3.11.9
• iPython 8.24.0
• matplotlib 3.8.4
• ipykernel 6.29.3

[ianthomas23]

@ivanlen Note there is a fix for this in #1237.