. Thread 1 (process 6263): #0 0x00007f7ebc0b3790 in ?? () #1 0x00000000017c4750 in ?? () #2 0x000000000172b730 in ?? () #3 0x00000000017c4150 in ?? () #4 0x000000000177fd70 in ?? () #5 0x00007fffc6f83b04 in ?? () #6 0x00007fffc6f828f0 in ?? () #7 0x00007fffc6f83b00 in ?? () #8 0x00007f7ebbfbe3c2 in ?? () #9 0x0000000001689e40 in ?? () #10 0x00000000004dbdcc in frame_dealloc (f=0x17c4150) at ../Objects/frameobject.c:411 p = valuestack = co = #11 0x0000000000000002 in ?? () #12 0x00007f7e0000000f in ?? () #13 0x0000000000000003 in ?? () #14 0x0000000001601cc8 in ?? () #15 0xedee1ab25b00280f in ?? () #16 0x00000000016886f0 in ?? () #17 0x0000000001609100 in ?? () #18 0x00007fffc6f83b00 in ?? () #19 0x00007f7ebef2b558 in ?? () #20 0x00007fffc6f82a30 in ?? () #21 0x0000000000446fd6 in PyDict_GetItem (op=0x0, key=0x1689e40) at ../Objects/dictobject.c:598 hash = 7536928 ep = tstate = (PyThreadState *) 0x26 #22 0x00000000004477da in PyDict_GetItemString (v=0x16886f0, key=) at ../Objects/dictobject.c:2169 kv = (PyObject *) 0x16886f0 rv = (PyObject *) 0x0 #23 0x0000000000000000 in ?? ()