cppy

import os from setuptools import setup, Extension from setuptools.command.build_ext import build_ext # A minimal C++ source file that includes cppy # In a real project, this would be in a separate .cpp file cpp_source = ''' #include <Python.h> #include <cppy/cppy.h> static PyObject* greet_method(PyObject* self, PyObject* args) { const char* name; if (!PyArg_ParseTuple(args, "s", &name)) { return NULL; } std::string greeting = "Hello, " + std::string(name) + "!"; cppy::ptr result_ptr(PyUnicode_FromString(greeting.c_str())); return result_ptr.release(); // release ownership to Python } static PyMethodDef methods[] = { {"greet", greet_method, METH_VARARGS, "Greet a person."}, {NULL, NULL, 0, NULL} }; static struct PyModuleDef mymodule = { PyModuleDef_HEAD_INIT, "_my_extension", // Name of the module NULL, // Module documentation -1, // Size of per-interpreter state of the module methods }; PyMODINIT_FUNC PyInit__my_extension(void) { return PyModule_Create(&mymodule); } ''' # Write the C++ code to a temporary file for demonstration with open('my_extension_module.cpp', 'w') as f: f.write(cpp_source) class CustomBuildExt(build_ext): def build_extension(self, ext): # Example of setting C++ standard if not using CppyBuildExt directly # For cppy, C++11 is typically required. if self.compiler.compiler_type == 'msvc': ext.extra_compile_args = ['/std:c++11'] else: ext.extra_compile_args = ['-std=c++11'] super().build_extension(ext) setup( name='my-cpp-extension', version='0.1.0', description='A simple C++ extension using cppy', ext_modules=[ Extension( '_my_extension', sources=['my_extension_module.cpp'], include_dirs=[os.path.join(os.environ.get('VIRTUAL_ENV', '/usr/local'), 'include')], # Adjust if cppy headers not found language='c++' ) ], # For real projects, you might use CppyBuildExt directly: # cmdclass={'build_ext': CppyBuildExt}, # Or ensure cppy is in build-system.requires in pyproject.toml # and then 'from cppy import CppyBuildExt' in setup.py cmdclass={'build_ext': CustomBuildExt}, setup_requires=['cppy'], # Ensure cppy is available during setup install_requires=[] ) # To demonstrate usage after hypothetical build and installation: # import _my_extension # print(_my_extension.greet("World"))