Error when trying to use

[eclake]

@kevinhainline - Any idea where I can start to figure this one out?

2020-02-10 18:21:10.514 python[10649:453777] -[NSApplication _setup:]: unrecognized selector sent to instance 0x7fbc9dbdbac0
2020-02-10 18:21:10.514 python[10649:453777] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSApplication _setup:]: unrecognized selector sent to instance 0x7fbc9dbdbac0'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fff2f0d98ab __exceptionPreprocess + 250
	1   libobjc.A.dylib                     0x00007fff6534a805 objc_exception_throw + 48
	2   CoreFoundation                      0x00007fff2f158b61 -[NSObject(NSObject) __retain_OA] + 0
	3   CoreFoundation                      0x00007fff2f03dadf ___forwarding___ + 1427
	4   CoreFoundation                      0x00007fff2f03d4b8 _CF_forwarding_prep_0 + 120
	5   libtk8.6.dylib                      0x0000000123a2231d TkpInit + 413
	6   libtk8.6.dylib                      0x000000012397a17e Initialize + 2622
	7   _tkinter.so                         0x00000001237a5be4 Tcl_AppInit + 84
	8   _tkinter.so                         0x00000001237a5448 Tkinter_Create + 1128
	9   libpython2.7.dylib                  0x000000010ed954e4 PyEval_EvalFrameEx + 22980
	10  libpython2.7.dylib                  0x000000010ed8f8c4 PyEval_EvalCodeEx + 2164
	11  libpython2.7.dylib                  0x000000010ed11723 function_call + 355
	12  libpython2.7.dylib                  0x000000010ece8c55 PyObject_Call + 101
	13  libpython2.7.dylib                  0x000000010ecf8032 instancemethod_call + 162
	14  libpython2.7.dylib                  0x000000010ece8c55 PyObject_Call + 101
	15  libpython2.7.dylib                  0x000000010ed9961f PyEval_CallObjectWithKeywords + 159
	16  libpython2.7.dylib                  0x000000010ecf5fc4 PyInstance_New + 148
	17  libpython2.7.dylib                  0x000000010ece8c55 PyObject_Call + 101
	18  libpython2.7.dylib                  0x000000010ed95168 PyEval_EvalFrameEx + 22088
	19  libpython2.7.dylib                  0x000000010ed8f8c4 PyEval_EvalCodeEx + 2164
	20  libpython2.7.dylib                  0x000000010ed8f042 PyEval_EvalCode + 34
	21  libpython2.7.dylib                  0x000000010edbca7d PyRun_FileExFlags + 157
	22  libpython2.7.dylib                  0x000000010edbc5c0 PyRun_SimpleFileExFlags + 816
	23  libpython2.7.dylib                  0x000000010edd3452 Py_Main + 3506
	24  libdyld.dylib                       0x00007fff666b87fd start + 1
	25  ???                                 0x0000000000000002 0x0 + 2
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Abort trap: 6

[eclake]

OK, found answer (here)[https://github.com/MTG/sms-tools/issues/36]
and added

matplotlib.use("TkAgg")

after the matplotlib import - leaving here in case anyone else finds the same problem!