使用C编写Python扩展包。官网文档其实已经很详尽~ 使用场景猜想：某些需要高效处理的算法、某些耗时的操作优化、或者某些核心算法加密等~
环境：macOS + pyhton3.7
文档地址：
整体结构
➜ strings_pkg git:(master) tree .├── LICENSE├── README.md├── setup.py└── strings_pkg ├── __init__.py └── strings.c1 directory, 5 files
扩展模块 strings.c
//// Created by lpe234 on 2018/12/27.//// doc: https://docs.python.org/3/extending/extending.html#include/** * reverse * 实际执行函数 * * @param str * @param size */void reverse(char *str, int size) { for (int i = 0, j = size-1; i < j ; ++i, --j) { char tmp = str[i]; str[i] = str[j]; str[j] = tmp; }}/** * 对函数进行封装 * * @param self * @param args * @return */PyObject *strings_reverse(PyObject *self, PyObject *args) { char *str; // 参数解析 if (!PyArg_ParseTuple(args, "s", &str)) { return NULL; } // 调用 reverse reverse(str, (int) strlen(str)); return Py_BuildValue("s", str);}/** * 定义模块方法表 * */static PyMethodDef StringsMethods[] = { {"reverse", strings_reverse, METH_VARARGS, "Reverse str."}, {NULL, NULL, 0, NULL}};/** * 定义模块 * */static struct PyModuleDef stringsmodule = { PyModuleDef_HEAD_INIT, "strings", "reverse str, \"abc\" => \"cba\"", -1, StringsMethods};/** * 模块初始化 * * @return */PyMODINIT_FUNCPyInit_strings(void) { return PyModule_Create(&stringsmodule);}
安装模块 setup.py
import setuptoolswith open('README.md', 'r') as fh: long_description = fh.read()strings_module = setuptools.Extension('strings', sources=['strings_pkg/strings.c'], language='c')setuptools.setup( name="strings_pkg", version="0.0.1", author="lpe234", author_email="lpe234@qq.com", description="string extension package", long_description=long_description, long_description_content_type="text/markdown", url="https://github.com/lpe234/strings_pkg", packages=setuptools.find_packages(), classifiers=[ "Programming Language :: Python :: 3", "License :: OSI Approved :: MIT License", "Operating System :: OS Independent", ], ext_modules=[strings_module]) 上传至pypi仓库
➜ twine upload dist/*
体验
➜ ~ pip3 install strings-pkgCollecting strings-pkg Downloading https://files.pythonhosted.org/packages/f9/30/d9324783ef220de473b8fac550029c43ef2a8b7c26a16a3881ae6c8d006a/strings_pkg-0.0.1-cp37-cp37m-macosx_10_14_x86_64.whlInstalling collected packages: strings-pkgSuccessfully installed strings-pkg-0.0.1➜ ~ python3Python 3.7.1 (default, Nov 28 2018, 11:51:47)[Clang 10.0.0 (clang-1000.11.45.5)] on darwinType "help", "copyright", "credits" or "license" for more information.>>> import strings>>> strings.reverse('hello world')'dlrow olleh'>>>