我正在尝试创建一个接受参数的python扩展。这是我的剧本:
#include <Python.h>
static PyObject * _message(PyObject *self, PyObject *args) {
char *title, *message;
if (!PyArg_ParseTuple(args, &title, &message))
return NULL; // Throw an error
return Py_BuildValue("");
}
static PyMethodDef methods[] = {
{"Message", (PyCFunction) _message, METH_VARARGS, "Message(title, message) Take a message"},
{NULL, NULL, 0, NULL}
};
static struct PyModuleDef functions = {
PyModuleDef_HEAD_INIT,
"test",
"Take a message",
"-1",
methods
};
PyMODINIT_FUNC PyInit_test(void) {
PyObject *module = PyModule_Create(&functions);
return module;
}
设置.py:
from setuptools import setup, Extension
module = Extension (
"test",
sources = ['test.c'])
setup(
name = "test",
version = "1.0",
description = "Take message input",
author = "Simon",
ext_modules = [module])
但是,当我试图编译它时,会留下一个错误:
C:\Users\Simon\Desktop\PyTest>python setup.py build
running build
running build_ext
building 'test' extension
C:\Program Files (x86)\Microsoft Visual Studio\2017\WDExpress\VC\Tools\MSVC\14.14.26428\bin\HostX86\x86\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MT -IC:\Users\Simon\AppData\Local\Programs\Python\Python36-32\include -IC:\Users\Simon\AppData\Local\Programs\Python\Python36-32\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\WDExpress\VC\Tools\MSVC\14.14.26428\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\cppwinrt" /Tctest.c /Fobuild\temp.win32-3.6\Release\test.obj
test.c
test.c(2): warning C4067: unexpected tokens following preprocessor directive - expected a newline
test.c(10): warning C4047: 'function': 'const char *' differs in levels of indirection from 'char **'
test.c(10): warning C4024: 'PyArg_ParseTuple': different types for formal and actual parameter 2
test.c(23): warning C4047: 'initializing': 'Py_ssize_t' differs in levels of indirection from 'char [3]'
test.c(42): warning C4047: 'function': 'const char *' differs in levels of indirection from 'int'
test.c(42): warning C4024: 'PyModule_AddStringConstant': different types for formal and actual parameter 3
C:\Program Files (x86)\Microsoft Visual Studio\2017\WDExpress\VC\Tools\MSVC\14.14.26428\bin\HostX86\x86\link.exe /nologo /INCREMENTAL:NO /LTCG /nodefaultlib:libucrt.lib ucrt.lib /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO /LIBPATH:C:\Users\Simon\AppData\Local\Programs\Python\Python36-32\libs /LIBPATH:C:\Users\Simon\AppData\Local\Programs\Python\Python36-32\PCbuild\win32 "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2017\WDExpress\VC\Tools\MSVC\14.14.26428\lib\x86" "/LIBPATH:C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\lib\um\x86" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.17134.0\ucrt\x86" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.17134.0\um\x86" test.lib /EXPORT:PyInit_test build\temp.win32-3.6\Release\test.obj /OUT:build\lib.win32-3.6\test.cp36-win32.pyd /IMPLIB:build\temp.win32-3.6\Release\test.cp36-win32.lib
Creating library build\temp.win32-3.6\Release\test.cp36-win32.lib and object build\temp.win32-3.6\Release\iup.cp36-win32.exp
Generating code
Finished generating code
我非常确信我的其余代码是正确的,除了在以下位置接受参数:
static PyObject * _message(PyObject *self, PyObject *args) {
char *title, *message;
if (!PyArg_ParseTuple(args, &title, &message))
扩展被创建,但是当我尝试运行它时,它崩溃了。
我如何接受位置参数?
