. Thread 1 (process 8469): #0 0x00007f4a6eb09790 in ?? () #1 0x0000000001e97360 in ?? () #2 0x0000000001e4bdc0 in ?? () #3 0x0000000001e96e90 in ?? () #4 0x0000000001e56088 in ?? () #5 0x00007fff7a3f3184 in ?? () #6 0x00007fff7a3f1f70 in ?? () #7 0x00007fff7a3f3180 in ?? () #8 0x00007f4a6ea143c2 in ?? () #9 0x0000000001dc5dc8 in ?? () #10 0x00000000004dbdcc in frame_dealloc (f=0x1e96e90) at ../Objects/frameobject.c:411 p = valuestack = co = #11 0x0000000000000002 in ?? () #12 0x00007f4a0000000f in ?? () #13 0x0000000000000003 in ?? () #14 0x0000000001ce9cc8 in ?? () #15 0xedee1ab25b00280f in ?? () #16 0x0000000001dc8810 in ?? () #17 0x0000000001cf1100 in ?? () #18 0x00007fff7a3f3180 in ?? () #19 0x0000000001dc9a98 in ?? () #20 0x00007fff7a3f20b0 in ?? () #21 0x0000000000446fd6 in PyDict_GetItem (op=0x0, key=0x1dc5dc8) at ../Objects/dictobject.c:598 hash = 7536928 ep = tstate = (PyThreadState *) 0x28 #22 0x00000000004477da in PyDict_GetItemString (v=0x1dc8810, key=) at ../Objects/dictobject.c:2169 kv = (PyObject *) 0x1dc8810 rv = (PyObject *) 0x0 #23 0x0000000000000000 in ?? ()