SymPy RecursionError crashes Python with fastcache installed

[asmeurer]

Run this in SymPy commit 08a8d78c7876f3266c1714d32158791e14f17f1f (the bug will probably be fixed soon). With fastcache installed:

>>> from sympy import *
>>> oo**I
Fatal Python error: Cannot recover from stack overflow.

Current thread 0x00007fff77e81000 (most recent call first):
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/sympify.py", line 234 in sympify
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/sympify.py", line 355 in _sympify
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 957 in __eq__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 141 in __mul__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 402 in __mul__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 868 in __mul__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/evalf.py", line 1377 in evalf
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 77 in __sympifyit_wrapper
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/numbers.py", line 2474 in _eval_power
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/power.py", line 192 in __new__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/expr.py", line 151 in __pow__
  File "/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/decorators.py", line 118 in binary_op_wrapper
  ...
Abort trap: 6

This is with Python 3.5.

With fastcache not installed, it just gives a normal RecursionError without crashing Python.

[pbrady]

Does the error only occur in 3.5?

[asmeurer]

It looks like it happens in Python 3.4 and 3.3 too (but not 2.7).

Here is the crash report generated by OS X

Process:               python3.4 [76536]
Path:                  /Users/USER/*/python3.4
Identifier:            python3.4
Version:               ???
Code Type:             X86-64 (Native)
Parent Process:        bash [941]
Responsible:           python3.4 [76536]
User ID:               501

Date/Time:             2015-10-23 13:28:17.489 -0500
OS Version:            Mac OS X 10.11.1 (15B42)
Report Version:        11
Anonymous UUID:        5AC59B85-E5D2-1EA1-6881-7497830B3180

Sleep/Wake UUID:       25DBE2C9-B6C1-4B2A-87DF-DC462B681D3B

Time Awake Since Boot: 76000 seconds
Time Since Wake:       11000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:
abort() called

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib          0x00007fff944050ae __pthread_kill + 10
1   libsystem_pthread.dylib         0x00007fff95477500 pthread_kill + 90
2   libsystem_c.dylib               0x00007fff9427437b abort + 129
3   libpython3.4m.dylib             0x000000010010ea3e Py_FatalError + 94
4   libpython3.4m.dylib             0x00000001000dbf1c _Py_CheckRecursiveCall + 156
5   libpython3.4m.dylib             0x000000010000cf0e PyObject_Call + 254
6   libpython3.4m.dylib             0x000000010002752c method_call + 140
7   libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
8   libpython3.4m.dylib             0x00000001000dbb07 PyEval_CallObjectWithKeywords + 87
9   libpython3.4m.dylib             0x000000010007b2a6 slot_tp_hash + 118
10  libpython3.4m.dylib             0x0000000100069b97 set_contains + 55
11  libpython3.4m.dylib             0x00000001000e3a35 PyEval_EvalFrameEx + 25301
12  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
13  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
14  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
15  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
16  libpython3.4m.dylib             0x000000010003dcda function_call + 186
17  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
18  libpython3.4m.dylib             0x000000010002752c method_call + 140
19  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
20  libpython3.4m.dylib             0x000000010007b13d slot_tp_richcompare + 93
21  libpython3.4m.dylib             0x0000000100061f3f PyObject_RichCompare + 287
22  libpython3.4m.dylib             0x0000000100062e40 PyObject_RichCompareBool + 48
23  _lrucache.so                    0x0000000104ccaee8 hashseq_richcompare + 120
24  libpython3.4m.dylib             0x0000000100061f3f PyObject_RichCompare + 287
25  libpython3.4m.dylib             0x0000000100062e40 PyObject_RichCompareBool + 48
26  libpython3.4m.dylib             0x0000000100050728 lookdict + 616
27  libpython3.4m.dylib             0x0000000100051e37 PyDict_GetItem + 119
28  _lrucache.so                    0x0000000104ccbab4 cache_call + 1044
29  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
30  libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
31  libpython3.4m.dylib             0x00000001000720a6 type_call + 38
32  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
33  libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
34  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
35  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
36  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
37  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
38  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
39  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
40  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
41  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
42  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
43  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
44  libpython3.4m.dylib             0x000000010003dcda function_call + 186
45  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
46  libpython3.4m.dylib             0x000000010002752c method_call + 140
47  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
48  libpython3.4m.dylib             0x000000010007869d call_maybe + 285
49  libpython3.4m.dylib             0x0000000100079c3a slot_nb_multiply + 314
50  libpython3.4m.dylib             0x000000010000c93e binary_op1 + 142
51  libpython3.4m.dylib             0x000000010000f808 PyNumber_Multiply + 40
52  libpython3.4m.dylib             0x00000001000e0ba2 PyEval_EvalFrameEx + 13378
53  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
54  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
55  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
56  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
57  libpython3.4m.dylib             0x000000010003dcda function_call + 186
58  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
59  _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
60  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
61  libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
62  libpython3.4m.dylib             0x00000001000720a6 type_call + 38
63  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
64  libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
65  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
66  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
67  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
68  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
69  libpython3.4m.dylib             0x000000010003dcda function_call + 186
70  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
71  libpython3.4m.dylib             0x000000010002752c method_call + 140
72  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
73  libpython3.4m.dylib             0x000000010007869d call_maybe + 285
74  libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
75  libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
76  libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
77  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
78  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
79  libpython3.4m.dylib             0x000000010003dcda function_call + 186
80  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
81  _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
82  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
83  libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
84  libpython3.4m.dylib             0x00000001000720a6 type_call + 38
85  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
86  libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
87  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
88  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
89  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
90  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
91  libpython3.4m.dylib             0x000000010003dcda function_call + 186
92  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
93  libpython3.4m.dylib             0x000000010002752c method_call + 140
94  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
95  libpython3.4m.dylib             0x000000010007869d call_maybe + 285
96  libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
97  libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
98  libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
99  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
100 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
101 libpython3.4m.dylib             0x000000010003dcda function_call + 186
102 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
103 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
104 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
105 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
106 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
107 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
108 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
109 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
110 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
111 libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
112 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
113 libpython3.4m.dylib             0x000000010003dcda function_call + 186
114 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
115 libpython3.4m.dylib             0x000000010002752c method_call + 140
116 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
117 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
118 libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
119 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
120 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
121 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
122 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
123 libpython3.4m.dylib             0x000000010003dcda function_call + 186
124 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
125 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
126 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
127 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
128 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
129 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
130 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
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132 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
133 libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
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135 libpython3.4m.dylib             0x000000010003dcda function_call + 186
136 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
137 libpython3.4m.dylib             0x000000010002752c method_call + 140
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139 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
140 libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
141 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
142 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
143 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
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145 libpython3.4m.dylib             0x000000010003dcda function_call + 186
146 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
147 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
148 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
149 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
150 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
151 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
152 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
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156 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
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158 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
159 libpython3.4m.dylib             0x000000010002752c method_call + 140
160 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
161 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
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163 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
164 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
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166 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
167 libpython3.4m.dylib             0x000000010003dcda function_call + 186
168 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
169 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
170 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
171 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
172 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
173 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
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178 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
179 libpython3.4m.dylib             0x000000010003dcda function_call + 186
180 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
181 libpython3.4m.dylib             0x000000010002752c method_call + 140
182 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
183 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
184 libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
185 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
186 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
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189 libpython3.4m.dylib             0x000000010003dcda function_call + 186
190 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
191 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
192 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
193 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
194 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
195 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
196 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
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199 libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
200 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
201 libpython3.4m.dylib             0x000000010003dcda function_call + 186
202 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
203 libpython3.4m.dylib             0x000000010002752c method_call + 140
204 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
205 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
206 libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
207 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
208 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
209 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
210 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
211 libpython3.4m.dylib             0x000000010003dcda function_call + 186
212 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
213 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
214 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
215 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
216 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
217 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
218 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
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220 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
221 libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
222 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
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224 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
225 libpython3.4m.dylib             0x000000010002752c method_call + 140
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229 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
230 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
231 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
232 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
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234 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
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236 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
237 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
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239 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
240 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
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249 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
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256 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
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258 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
259 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
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261 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
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277 libpython3.4m.dylib             0x000000010003dcda function_call + 186
278 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
279 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
280 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
281 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
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283 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
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296 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
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422 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
423 libpython3.4m.dylib             0x000000010002752c method_call + 140
424 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
425 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
426 libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
427 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
428 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
429 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
430 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
431 libpython3.4m.dylib             0x000000010003dcda function_call + 186
432 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
433 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
434 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
435 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
436 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
437 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
438 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
439 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
440 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
441 libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
442 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
443 libpython3.4m.dylib             0x000000010003dcda function_call + 186
444 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
445 libpython3.4m.dylib             0x000000010002752c method_call + 140
446 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
447 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
448 libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
449 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
450 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
451 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
452 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
453 libpython3.4m.dylib             0x000000010003dcda function_call + 186
454 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
455 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
456 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
457 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
458 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
459 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
460 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
461 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
462 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
463 libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
464 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
465 libpython3.4m.dylib             0x000000010003dcda function_call + 186
466 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
467 libpython3.4m.dylib             0x000000010002752c method_call + 140
468 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
469 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
470 libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
471 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
472 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
473 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
474 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
475 libpython3.4m.dylib             0x000000010003dcda function_call + 186
476 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
477 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
478 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
479 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
480 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
481 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
482 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
483 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
484 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
485 libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
486 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
487 libpython3.4m.dylib             0x000000010003dcda function_call + 186
488 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
489 libpython3.4m.dylib             0x000000010002752c method_call + 140
490 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
491 libpython3.4m.dylib             0x000000010007869d call_maybe + 285
492 libpython3.4m.dylib             0x000000010007a895 slot_nb_power + 389
493 libpython3.4m.dylib             0x000000010000c66d ternary_op + 141
494 libpython3.4m.dylib             0x00000001000e0af1 PyEval_EvalFrameEx + 13201
495 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
496 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
497 libpython3.4m.dylib             0x000000010003dcda function_call + 186
498 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
499 _lrucache.so                    0x0000000104ccbf4f cache_call + 2223
500 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
501 libpython3.4m.dylib             0x00000001000713d4 slot_tp_new + 180
502 libpython3.4m.dylib             0x00000001000720a6 type_call + 38
503 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
504 libpython3.4m.dylib             0x00000001000e1932 PyEval_EvalFrameEx + 16850
505 libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
506 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
507 libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
508 libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
509 libpython3.4m.dylib             0x000000010003dcda function_call + 186
510 libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
511 libpython3.4m.dylib             0x000000010002752c method_call + 140

Thread 1:
0   libsystem_kernel.dylib          0x00007fff94404f5e __psynch_cvwait + 10
1   libsystem_pthread.dylib         0x00007fff9547573d _pthread_cond_wait + 767
2   libpython3.4m.dylib             0x00000001000dc004 take_gil + 228
3   libpython3.4m.dylib             0x00000001000dcd40 PyEval_RestoreThread + 80
4   _sqlite3.so                     0x0000000104c7e3d3 _pysqlite_connection_begin + 67
5   _sqlite3.so                     0x0000000104c825bc _pysqlite_query_execute + 2284
6   libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
7   libpython3.4m.dylib             0x00000001000dbb07 PyEval_CallObjectWithKeywords + 87
8   _sqlite3.so                     0x0000000104c7deb6 pysqlite_connection_execute + 86
9   libpython3.4m.dylib             0x00000001000e42d2 PyEval_EvalFrameEx + 27506
10  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
11  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
12  libpython3.4m.dylib             0x000000010003dcda function_call + 186
13  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
14  libpython3.4m.dylib             0x00000001000e1034 PyEval_EvalFrameEx + 14548
15  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
16  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
17  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
18  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
19  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
20  libpython3.4m.dylib             0x000000010003dcda function_call + 186
21  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
22  libpython3.4m.dylib             0x00000001000e1034 PyEval_EvalFrameEx + 14548
23  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
24  libpython3.4m.dylib             0x00000001000e49d3 PyEval_EvalFrameEx + 29299
25  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
26  libpython3.4m.dylib             0x00000001000e4b22 PyEval_EvalFrameEx + 29634
27  libpython3.4m.dylib             0x00000001000e605d PyEval_EvalCodeEx + 2349
28  libpython3.4m.dylib             0x000000010003dcda function_call + 186
29  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
30  libpython3.4m.dylib             0x000000010002752c method_call + 140
31  libpython3.4m.dylib             0x000000010000ce78 PyObject_Call + 104
32  libpython3.4m.dylib             0x00000001000dbb07 PyEval_CallObjectWithKeywords + 87
33  libpython3.4m.dylib             0x000000010012b527 t_bootstrap + 71
34  libsystem_pthread.dylib         0x00007fff954749b1 _pthread_body + 131
35  libsystem_pthread.dylib         0x00007fff9547492e _pthread_start + 168
36  libsystem_pthread.dylib         0x00007fff95472385 thread_start + 13

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x0000000000000006  rcx: 0x00007fff5bf7dbb8  rdx: 0x0000000000000000
  rdi: 0x0000000000000a0b  rsi: 0x0000000000000006  rbp: 0x00007fff5bf7dbe0  rsp: 0x00007fff5bf7dbb8
   r8: 0x00000000000002a7   r9: 0x000000000000027a  r10: 0x0000000008000000  r11: 0x0000000000000206
  r12: 0x00007fff77c90bd0  r13: 0x0000000000000002  r14: 0x00007fff77e81000  r15: 0x0000000000000000
  rip: 0x00007fff944050ae  rfl: 0x0000000000000206  cr2: 0x00007fff77c8e038

Logical CPU:     0
Error Code:      0x02000148
Trap Number:     133


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External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 4
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 30088688
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=114.3M resident=0K(0%) swapped_out_or_unallocated=114.3M(100%)
Writable regions: Total=134.2M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=134.2M(100%)

                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Activity Tracing                  2048K        2 
Kernel Alloc Once                    4K        2 
MALLOC                           108.5M       45 
MALLOC guard page                   16K        4 
MALLOC_LARGE (reserved)            384K        4         reserved VM address space (unallocated)
Process Corpse Info               2048K        2 
STACK GUARD                          4K        2 
Stack                             5128K        2 
VM_ALLOCATE                          8K        3 
__DATA                            3948K       92 
__LINKEDIT                        92.7M       45 
__TEXT                            21.7M       88 
__UNICODE                          552K        2 
__UNIXSTACK                       16.0M        2 
shared memory                       12K        4 
===========                     =======  ======= 
TOTAL                            252.6M      284 
TOTAL, minus reserved VM space   252.3M      284 

Model: MacBookPro11,4, BootROM MBP114.0172.B06, 4 processors, Intel Core i7, 2.5 GHz, 16 GB, SMC 2.29f24
Graphics: Intel Iris Pro, Intel Iris Pro, Built-In
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54343147533642465238412D50422020
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54343147533642465238412D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x152), Broadcom BCM43xx 1.0 (7.21.94.29.1a4)
Bluetooth: Version 4.4.2f1 16391, 3 services, 18 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM0512G, 500.28 GB
USB Device: USB 3.0 Bus
USB Device: My Passport 0820
USB Device: Apple Internal Keyboard / Trackpad
USB Device: Bluetooth USB Host Controller
USB Device: Optical USB Mouse
Thunderbolt Bus: MacBook Pro, Apple Inc., 27.1

[pbrady]

Interesting. I thought I fixed this with #21 but apparently not.

[pbrady]

I'm afraid I can't reproduce this. Are you sure that's the right sympy commit:

$ git log --pretty=oneline -n 4
08a8d78c7876f3266c1714d32158791e14f17f1f Merge pull request #9996 from Newman101/Hyperfocal
097d994d56bcc48eba83dd2825808a4689f79a10 Removed the default values
cec1ff9dfe402b8b7f4447f588b44f1dff05cc1a Merge pull request #10002 from Newman101/full_moon_cycle
75ec44a848b4d1b1a5283d7e72c6773b49994eb5 Merge pull request #10004 from gxyd/prod_runTime

$ rlwrap /usr/local/opt/python-3.5/bin/python3.5
Python 3.5.0 (default, Oct  1 2015, 21:51:43) 
[GCC 5.1.1 20150618 (Red Hat 5.1.1-4)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from sympy import *
>>> oo*I
oo*I
>>> from fastcache import __version__
>>> print(__version__)
1.0.2
>>> 

[asmeurer]

oo**I, not oo*I.

[pbrady]

Ah. Now I see the failure. This stems from custom comparison and hashing routines which need to be carefully wrapped in PyRecursion calls. I think the best thing to do is eliminate these custom routines by changing the hashseq implementation so that it doesn't subclass list but rather simply contains a tuple so we can make use of the battle tested hash and comparison routines for PyTuple. Might take some time to do this though