使用Cython

Question

当我尝试用Cython包装C ++函数时，我遇到编译器错误。我有一个超级简单的C ++程序打印“Hello World”，我无法弄清楚如何解决这个错误。我认为它与分配给主函数的数据类型有关，但我不确定从哪里开始......

的hello.c

#include<stdio.h>
#include <Python.h>

int main()
{
    printf("Hello World");
}

helloworld.pyx

cdef extern from "hello.c":
    cpdef main()

最后，setup.py

try:
    from setuptools import setup
    from setuptools import Extension
    from Cython.Distutils import build_ext
except ImportError:
    from distutils.core import setup
    from distutils.extension import Extension

from Cython.Build import cythonize

ext_modules = [Extension(
    "hello_world",
    sources=["helloworld.pyx"],
    language="c++",              # this causes Cython to create C++ source
    )]

setup(
    name='Hello World',
    cmdclass = {'build_ext': build_ext},
    ext_modules = ext_modules
)

当我运行python setup.py build_ext --inplace时，我收到以下错误：helloworld.cpp(1253): error C2664: __Pyx_CFunc_object____to_py : cannot convert parameter 1 from int (__cdecl *)(void) to PyObject *(cdecl *)(void) None of the functions with this name in scope match the target type