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這是我第一次嘗試擴展Python函數。 在Python我有花車的4維列表:用C擴展Python,numpy - 代碼行嗎?
import polarMM
data = [[[(102.0, 815.0), (84.0, 791.0), (302.0, 806.0), (38.0, 801.0)], [(70.0, 696.0), (52.0, 653.0), (172.0, 649.0), (13.0, 647.0)], [(77.0, 696.0), (143.0, 653.0), (211.0, 649.0), (197.0, 647.0)], [(115.0, 815.0), (228.0, 791.0), (371.0, 806.0), (322.0, 801.0)]], [[(167.0, 815.0), (242.0, 791.0), (465.0, 806.0), (339.0, 801.0)], [(135.0, 696.0), (186.0, 653.0), (329.0, 649.0), (271.0, 647.0)], [(142.0, 696.0), (277.0, 653.0), (373.0, 649.0), (489.0, 647.0)], [(180.0, 815.0), (397.0, 791.0), (533.0, 806.0), (623.0, 801.0)]]]
print polarMM.test(data)
這裏爲c我的代碼;它工作之前,我把一行解析列表。 我不知道:我的環境不好或者這部分代碼錯了?飛機墜毀的
static PyObject *
polarMM_test(PyObject *self, PyObject *args)
{
PyObject *objContours;
PyArrayObject *pyContours;
if (!PyArg_ParseTuple(args, "OO", &objContours, &objMMValues))
return NULL;
// **** AND HERE CODE CRASHES *****:
pyContours = (PyArrayObject*) PyArray_FROMANY (objContours, PyArray_DOUBLE, 0, 4, NPY_IN_ARRAY);
return Py_BuildValue("s", "just test");
}
堆棧跟蹤:
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000228
...
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 polarMM.so 0x00000001002f1d1d polarMM_test + 45 (polarMM.c:63)
1 org.python.python 0x00000001000c2fad PyEval_EvalFrameEx + 21405
2 org.python.python 0x00000001000c4fb3 PyEval_EvalCodeEx + 2115
3 org.python.python 0x00000001000c50d6 PyEval_EvalCode + 54
4 org.python.python 0x00000001000e995e PyRun_FileExFlags + 174
5 org.python.python 0x00000001000e9bfa PyRun_SimpleFileExFlags + 458
6 org.python.python 0x0000000100100c0d Py_Main + 3101
7 org.python.python 0x0000000100000f14 0x100000000 + 3860
我工作在Mac OSX 10.9.3,而不是默認設置的Python 2.7,最新的numpy的。
它看起來像你試圖解引用NULL指針。 (對不起,我不知道C API的更多具體細節。) – pts
您是否記得調用'import_array()'(http://docs.scipy.org/doc/numpy/reference/c-api.array .html#import_array)在擴展模塊的初始化函數中?例如,請參閱http://docs.scipy.org/doc/numpy/user/c-info.how-to-extend.html#required-subroutine –
沃倫,你無法想象我現在的感受 - 20小時後headbanging的用法和樣例: 你有權利。謝謝! –