(gdb) bt
#0  PyTuple_Size (op=0x0) at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Objects/tupleobject.c:127
#1  0x00007ffff625b926 in pysqlite_row_keys (self=0x7ffff7f31f50, args=<optimized out>, kwargs=<optimized out>)
    at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Modules/_sqlite/row.c:151
#2  0x00007ffff7a6948d in call_function (oparg=<optimized out>, pp_stack=0x7fffffffd0d0) at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Python/ceval.c:4210
#3  PyEval_EvalFrameEx (f=f@entry=Frame 0x7ffff7f19438, for file ./testcase.py, line 22, in <module> (), throwflag=throwflag@entry=0)
    at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Python/ceval.c:2829
#4  0x00007ffff7a69e1e in PyEval_EvalCodeEx (_co=_co@entry=<code at remote 0x7ffff7ed9390>, 
    globals=globals@entry={'__loader__': <SourceFileLoader(name='__main__', path='./testcase.py') at remote 0x7ffff7ecce80>, 'pickle': <module at remote 0x7ffff7e47ae8>, '__spec__': None, '__package__': None, '__builtins__': <module at remote 0x7ffff7fa0c28>, '__file__': './testcase.py', 'conn': <sqlite3.Connection at remote 0x7ffff6214570>, 'dump': b'\x80\x03csqlite3\nRow\nq\x00)\x81q\x01.', 'row': <sqlite3.Row at remote 0x7ffff7ea5f70>, 'load': <sqlite3.Row at remote 0x7ffff7f31f50>, '__cached__': None, 'print_function': <_Feature(compiler_flag=65536, mandatory=(3, 0, 0, 'alpha', 0), optional=(2, 6, 0, 'alpha', 2)) at remote 0x7ffff7e4ba90>, '__name__': '__main__', 'sqlite3': <module at remote 0x7ffff7e47958>, '__doc__': None}, 
    locals=locals@entry={'__loader__': <SourceFileLoader(name='__main__', path='./testcase.py') at remote 0x7ffff7ecce80>, 'pickle': <module at remote 0x7ffff7e47ae8>, '__spec__': None, '__package__': None, '__builtins__': <module at remote 0x7ffff7fa0c28>, '__file__': './testcase.py', 'conn': <sqlite3.Connection at remote 0x7ffff6214570>, 'dump': b'\x80\x03csqlite3\nRow\nq\x00)\x81q\x01.', 'row': <sqlite3.Row at remote 0x7ffff7ea5f70>, 'load': <sqlite3.Row at remote 0x7ffff7f31f50>, '__cached__': None, 'print_function': <_Feature(compiler_flag=65536, mandatory=(3, 0, 0, 'alpha', 0), optional=(2, 6, 0, 'alpha', 2)) at remote 0x7ffff7e4ba90>, '__name__': '__main__', 'sqlite3': <module at remote 0x7ffff7e47958>, '__doc__': None}, args=args@entry=0x0, 
    argcount=argcount@entry=0, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0)
    at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Python/ceval.c:3578
#5  0x00007ffff7a69eeb in PyEval_EvalCode (co=co@entry=<code at remote 0x7ffff7ed9390>, 
    globals=globals@entry={'__loader__': <SourceFileLoader(name='__main__', path='./testcase.py') at remote 0x7ffff7ecce80>, 'pickle': <module at remote 0x7ffff7e47ae8>, '__spec__': None, '__package__': None, '__builtins__': <module at remote 0x7ffff7fa0c28>, '__file__': './testcase.py', 'conn': <sqlite3.Connection at remote 0x7ffff6214570>, 'dump': b'\x80\x03csqlite3\nRow\nq\x00)\x81q\x01.', 'row': <sqlite3.Row at remote 0x7ffff7ea5f70>, 'load': <sqlite3.Row at remote 0x7ffff7f31f50>, '__cached__': None, 'print_function': <_Feature(compiler_flag=65536, mandatory=(3, 0, 0, 'alpha', 0), optional=(2, 6, 0, 'alpha', 2)) at remote 0x7ffff7e4ba90>, '__name__': '__main__', 'sqlite3': <module at remote 0x7ffff7e47958>, '__doc__': None}, 
    locals=locals@entry={'__loader__': <SourceFileLoader(name='__main__', path='./testcase.py') at remote 0x7ffff7ecce80>, 'pickle': <module at remote 0x7ffff7e47ae8>, '__spec__': None, '__package__': None, '__builtins__': <module at remote 0x7ffff7fa0c28>, '__file__': './testcase.py', 'conn': <sqlite3.Connection at remote 0x7ffff6214570>, 'dump': b'\x80\x03csqlite3\nRow\nq\x00)\x81q\x01.', 'row': <sqlite3.Row at remote 0x7ffff7ea5f70>, 'load': <sqlite3.Row at remote 0x7ffff7f31f50>, '__cached__': None, 'print_function': <_Feature(compiler_flag=65536, mandatory=(3, 0, 0, 'alpha', 0), optional=(2, 6, 0, 'alpha', 2)) at remote 0x7ffff7e4ba90>, '__name__': '__main__', 'sqlite3': <module at remote 0x7ffff7e47958>, '__doc__': None})
    at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Python/ceval.c:773
#6  0x00007ffff7a84be4 in run_mod (mod=mod@entry=0x6d1248, filename=filename@entry='./testcase.py', 
    globals=globals@entry={'__loader__': <SourceFileLoader(name='__main__', path='./testcase.py') at remote 0x7ffff7ecce80>, 'pickle': <module at remote 0x7ffff7e47ae8>, '__spec__': None, '__package__': None, '__builtins__': <module at remote 0x7ffff7fa0c28>, '__file__': './testcase.py', 'conn': <sqlite3.Connection at remote 0x7ffff6214570>, 'dump': b'\x80\x03csqlite3\nRow\nq\x00)\x81q\x01.', 'row': <sqlite3.Row at remote 0x7ffff7ea5f70>, 'load': <sqlite3.Row at remote 0x7ffff7f31f50>, '__cached__': None, 'print_function': <_Feature(compiler_flag=65536, mandatory=(3, 0, 0, 'alpha', 0), optional=(2, 6, 0, 'alpha', 2)) at remote 0x7ffff7e4ba90>, '__name__': '__main__', 'sqlite3': <module at remote 0x7ffff7e47958>, '__doc__': None}, 
    locals=locals@entry={'__loader__': <SourceFileLoader(name='__main__', path='./testcase.py') at remote 0x7ffff7ecce80>, 'pickle': <module at remote 0x7ffff7e47ae8>, '__spec__': None, '__package__': None, '__builtins__': <module at remote 0x7ffff7fa0c28>, '__file__': './testcase.py', 'conn': <sqlite3.Connection at remote 0x7ffff6214570>, 'dump': b'\x80\x03csqlite3\nRow\nq\x00)\x81q\x01.', 'row': <sqlite3.Row at remote 0x7ffff7ea5f70>, 'load': <sqlite3.Row at remote 0x7ffff7f31f50>, '__cached__': None, 'print_function': <_Feature(compiler_flag=65536, mandatory=(3, 0, 0, 'alpha', 0), optional=(2, 6, 0, 'alpha', 2)) at remote 0x7ffff7e4ba90>, '__name__': '__main__', 'sqlite3': <module at remote 0x7ffff7e47958>, '__doc__': None}, 
    flags=flags@entry=0x7fffffffd390, arena=arena@entry=0x668450) at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Python/pythonrun.c:2180
#7  0x00007ffff7a86bad in PyRun_FileExFlags (fp=fp@entry=0x6513c0, filename_str=filename_str@entry=0x7ffff7f0d650 "./testcase.py", start=start@entry=257, 
    globals=globals@entry={'__loader__': <SourceFileLoader(name='__main__', path='./testcase.py') at remote 0x7ffff7ecce80>, 'pickle': <module at remote 0x7ffff7e47ae8>, '__spec__': None, '__package__': None, '__builtins__': <module at remote 0x7ffff7fa0c28>, '__file__': './testcase.py', 'conn': <sqlite3.Connection at remote 0x7ffff6214570>, 'dump': b'\x80\x03csqlite3\nRow\nq\x00)\x81q\x01.', 'row': <sqlite3.Row at remote 0x7ffff7ea5f70>, 'load': <sqlite3.Row at remote 0x7ffff7f31f50>, '__cached__': None, 'print_function': <_Feature(compiler_flag=65536, mandatory=(3, 0, 0, 'alpha', 0), optional=(2, 6, 0, 'alpha', 2)) at remote 0x7ffff7e4ba90>, '__name__': '__main__', 'sqlite3': <module at remote 0x7ffff7e47958>, '__doc__': None}, 
    locals=locals@entry={'__loader__': <SourceFileLoader(name='__main__', path='./testcase.py') at remote 0x7ffff7ecce80>, 'pickle': <module at remote 0x7ffff7e47ae8>, '__spec__': None, '__pac
kage__': None, '__builtins__': <module at remote 0x7ffff7fa0c28>, '__file__': './testcase.py', 'conn': <sqlite3.Connection at remote 0x7ffff6214570>, 'dump': b'\x80\x03csqlite3\nRow\nq\x00)\x81q\x01.', 'row': <sqlite3.Row at remote 0x7ffff7ea5f70>, 'load': <sqlite3.Row at remote 0x7ffff7f31f50>, '__cached__': None, 'print_function': <_Feature(compiler_flag=65536, mandatory=(3, 0, 0, 'alpha', 0), optional=(2, 6, 0, 'alpha', 2)) at remote 0x7ffff7e4ba90>, '__name__': '__main__', 'sqlite3': <module at remote 0x7ffff7e47958>, '__doc__': None}, closeit=closeit@entry=1, 
    flags=flags@entry=0x7fffffffd390) at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Python/pythonrun.c:2133
#8  0x00007ffff7a87a81 in PyRun_SimpleFileExFlags (fp=fp@entry=0x6513c0, filename=<optimized out>, closeit=closeit@entry=1, flags=flags@entry=0x7fffffffd390)
    at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Python/pythonrun.c:1606
#9  0x00007ffff7a88883 in PyRun_AnyFileExFlags (fp=fp@entry=0x6513c0, filename=<optimized out>, closeit=closeit@entry=1, flags=flags@entry=0x7fffffffd390)
    at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Python/pythonrun.c:1292
#10 0x00007ffff7a9cd14 in run_file (p_cf=0x7fffffffd390, filename=0x604340 L"./testcase.py", fp=0x6513c0) at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Modules/main.c:319
#11 Py_Main (argc=argc@entry=2, argv=argv@entry=0x603010) at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Modules/main.c:751
#12 0x0000000000400b09 in main (argc=2, argv=<optimized out>) at /var/tmp/portage/dev-lang/python-3.4.1/work/Python-3.4.1/Modules/python.c:69