mac python3 conda pytorch出错：libc++abi.dylib: terminating with uncaught exception of type NSException

mac 10.14/ conda/python 3.7环境下运行神经网络例子出现错误：

-- ::55.982 python[:] -[NSApplication _setup:]: unrecognized selector sent to instance 0x7fd5a5811270
-- ::55.988 python[:] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSApplication _setup:]: unrecognized selector sent to instance 0x7fd5a5811270'
*** First throw call stack:
(
       CoreFoundation                      0x00007fff3c94643d __exceptionPreprocess +
       libobjc.A.dylib                     0x00007fff68853720 objc_exception_throw +
       CoreFoundation                      0x00007fff3c9c3255 -[NSObject(NSObject) __retain_OA] +
       CoreFoundation                      0x00007fff3c8e5ad0 ___forwarding___ +
       CoreFoundation                      0x00007fff3c8e5478 _CF_forwarding_prep_0 +
       libtk8..dylib                      0x00000001334ee31d TkpInit +
       libtk8..dylib                      0x000000013344617e Initialize +
       _tkinter.cpython-37m-darwin.so      0x000000010727aa0f _tkinter_create +
       python                              0x0000000105b028b6 _PyMethodDef_RawFastCallKeywords +
       python                              0x0000000105c3fba2 call_function +
      python                              0x0000000105c3d852 _PyEval_EvalFrameDefault +
      python                              0x0000000105c311fe _PyEval_EvalCodeWithName +
      python                              0x0000000105b01587 _PyFunction_FastCallDict +
      python                              0x0000000105b83c31 slot_tp_init +
      python                              0x0000000105b8dc01 type_call +
      python                              0x0000000105b02283 _PyObject_FastCallKeywords +
      python                              0x0000000105c3fc35 call_function +
      python                              0x0000000105c3d946 _PyEval_EvalFrameDefault +
      python                              0x0000000105b02075 function_code_fastcall +
      python                              0x0000000105c3fb27 call_function +
      python                              0x0000000105c3d852 _PyEval_EvalFrameDefault +
      python                              0x0000000105c311fe _PyEval_EvalCodeWithName +
      python                              0x0000000105b01587 _PyFunction_FastCallDict +
      python                              0x0000000105b054a2 method_call +
      python                              0x0000000105b02ef2 PyObject_Call +
      python                              0x0000000105c3da9d _PyEval_EvalFrameDefault +
      python                              0x0000000105c311fe _PyEval_EvalCodeWithName +
      python                              0x0000000105b02783 _PyFunction_FastCallKeywords +
      python                              0x0000000105c3fb27 call_function +
      python                              0x0000000105c3d88d _PyEval_EvalFrameDefault +
      python                              0x0000000105b02075 function_code_fastcall +
      python                              0x0000000105c3fb27 call_function +
      python                              0x0000000105c3d88d _PyEval_EvalFrameDefault +
      python                              0x0000000105c311fe _PyEval_EvalCodeWithName +
      python                              0x0000000105b02783 _PyFunction_FastCallKeywords +
      python                              0x0000000105c3fb27 call_function +
      python                              0x0000000105c3d88d _PyEval_EvalFrameDefault +
      python                              0x0000000105c311fe _PyEval_EvalCodeWithName +
      python                              0x0000000105b02783 _PyFunction_FastCallKeywords +
      python                              0x0000000105c3fb27 call_function +
      python                              0x0000000105c3d852 _PyEval_EvalFrameDefault +
      python                              0x0000000105b02075 function_code_fastcall +
      python                              0x0000000105c3fb27 call_function +
      python                              0x0000000105c3d88d _PyEval_EvalFrameDefault +
      python                              0x0000000105c311fe _PyEval_EvalCodeWithName +
      python                              0x0000000105c94760 PyRun_FileExFlags +
      python                              0x0000000105c93bd7 PyRun_SimpleFileExFlags +
      python                              0x0000000105cc17bf pymain_main +
      python                              0x0000000105ad4bbd main +
      libdyld.dylib                       0x00007fff69921085 start +
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Abort trap: 

解决办法，运行下面的命令：

$ mkdir -p ~/.matplotlib
$ echo "backend: TkAgg" > ~/.matplotlib/matplotlibrc

然后就成功了

具体原因可见：https://github.com/PAHdb/AmesPAHdbPythonSuite/issues/1