PyPlot Julia v0.7 on macOS not working

[stumarcus314]

When I run the test example on the Pyplot.jl page, I get the following error:

2019-04-14 16:29:49.518 julia[55472:37704296] -[NSApplication _setup:]: unrecognized selector sent to instance 0x7ff6cc573250
2019-04-14 16:29:49.519 julia[55472:37704296] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSApplication _setup:]: unrecognized selector sent to instance 0x7ff6cc573250'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff4353cded __exceptionPreprocess + 256
1 libobjc.A.dylib 0x00007fff6f604720 objc_exception_throw + 48
2 CoreFoundation 0x00007fff435ba195 -[NSObject(NSObject) __retain_OA] + 0
3 CoreFoundation 0x00007fff434dea60 forwarding + 1486
4 CoreFoundation 0x00007fff434de408 _CF_forwarding_prep_0 + 120
5 libtk8.6.dylib 0x000000013dba731d TkpInit + 413
6 libtk8.6.dylib 0x000000013daff17e Initialize + 2622
7 _tkinter.cpython-37m-darwin.so 0x000000013d0eea0f _tkinter_create + 1183
8 libpython3.7m.dylib 0x000000012aa252b9 _PyMethodDef_RawFastCallKeywords + 681
9 libpython3.7m.dylib 0x000000012aa253bd _PyCFunction_FastCallKeywords + 45
10 libpython3.7m.dylib 0x000000012ab2ec4b call_function + 603
11 libpython3.7m.dylib 0x000000012ab25e45 _PyEval_EvalFrameDefault + 7893
12 libpython3.7m.dylib 0x000000012ab23ad9 _PyEval_EvalCodeWithName + 3305
13 libpython3.7m.dylib 0x000000012aa241b1 _PyFunction_FastCallDict + 481
14 libpython3.7m.dylib 0x000000012aa25ba4 _PyObject_Call_Prepend + 164
15 libpython3.7m.dylib 0x000000012aa8d5aa slot_tp_init + 298
16 libpython3.7m.dylib 0x000000012aa96ca7 type_call + 295
17 libpython3.7m.dylib 0x000000012aa24e73 _PyObject_FastCallKeywords + 691
18 libpython3.7m.dylib 0x000000012ab2ecb4 call_function + 708
19 libpython3.7m.dylib 0x000000012ab25f6c _PyEval_EvalFrameDefault + 8188
20 libpython3.7m.dylib 0x000000012aa24a6e function_code_fastcall + 254
21 libpython3.7m.dylib 0x000000012ab2ecbe call_function + 718
22 libpython3.7m.dylib 0x000000012ab25e45 _PyEval_EvalFrameDefault + 7893
23 libpython3.7m.dylib 0x000000012ab23ad9 _PyEval_EvalCodeWithName + 3305
24 libpython3.7m.dylib 0x000000012aa241b1 _PyFunction_FastCallDict + 481
25 libpython3.7m.dylib 0x000000012aa25ba4 _PyObject_Call_Prepend + 164
26 libpython3.7m.dylib 0x000000012aa275b4 method_call + 36
27 libpython3.7m.dylib 0x000000012aa255b6 PyObject_Call + 246
28 libpython3.7m.dylib 0x000000012ab261b5 _PyEval_EvalFrameDefault + 8773
29 libpython3.7m.dylib 0x000000012ab23ad9 _PyEval_EvalCodeWithName + 3305
30 libpython3.7m.dylib 0x000000012aa241b1 _PyFunction_FastCallDict + 481
31 ??? 0x000000012a629b8e 0x0 + 5006072718
32 ??? 0x000000012a63e6b7 0x0 + 5006157495
33 ??? 0x000000012a645b18 0x0 + 5006187288
34 libjulia.0.7.0.dylib 0x000000010ca89833 jl_fptr_trampoline + 51
35 ??? 0x000000012a645a26 0x0 + 5006187046
36 libjulia.0.7.0.dylib 0x000000010ca9a1c2 jl_f__apply + 1218
37 libjulia.0.7.0.dylib 0x000000010ca9a65f jl_f__apply_latest + 63
38 ??? 0x000000012a6455f5 0x0 + 5006185973
39 ??? 0x000000012a6433f4 0x0 + 5006177268
40 ??? 0x000000012a643534 0x0 + 5006177588
41 ??? 0x000000012a642e37 0x0 + 5006175799
42 ??? 0x000000012a6072ec 0x0 + 5005931244
)
libc++abi.dylib: terminating with uncaught exception of type NSException

signal (6): Abort trap: 6
in expression starting at no file:0
__pthread_kill at /usr/lib/system/libsystem_kernel.dylib (unknown line)
Allocations: 14569001 (Pool: 14566720; Big: 2281); GC: 32
Abort trap: 6

[stevengj]

Looks like this is a duplicate of #410, which is an upstream problem with tkinter. Try updating to the latest version of PyPlot, which now defaults to the qt backend instead.