{"id":938761,"date":"2024-12-26T20:18:35","date_gmt":"2024-12-26T12:18:35","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/938761.html"},"modified":"2024-12-26T20:18:37","modified_gmt":"2024-12-26T12:18:37","slug":"python%e5%a6%82%e4%bd%95%e5%b5%8c%e5%85%a5c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/938761.html","title":{"rendered":"python\u5982\u4f55\u5d4c\u5165c"},"content":{"rendered":"

\"python\u5982\u4f55\u5d4c\u5165c\"<\/p>\n

\u5d4c\u5165C\u8bed\u8a00\u4ee3\u7801\u5230Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528Python\u7684C\u6269\u5c55\u6a21\u5757\u3001\u5229\u7528Cython\u3001\u4f7f\u7528ctypes\u5e93\u3001\u901a\u8fc7cffi\u5e93<\/strong>\u7b49\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u521b\u5efaPython\u7684C\u6269\u5c55\u6a21\u5757\uff0c\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u83b7\u5f97\u66f4\u597d\u7684\u6027\u80fd\u63d0\u5347\u3002Cython\u662f\u4e00\u79cd\u4f18\u5316\u5de5\u5177\uff0c\u80fd\u591f\u5c06Python\u4ee3\u7801\u8f6c\u6362\u4e3aC\u4ee3\u7801\u3002ctypes\u548ccffi\u5219\u63d0\u4f9b\u4e86\u5728Python\u4e2d\u8c03\u7528C\u51fd\u6570\u7684\u4fbf\u5229\u9014\u5f84\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u8ba8\u8bba\u6bcf\u4e00\u79cd\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u793a\u4f8b\u4ee3\u7801\u4ee5\u5e2e\u52a9\u7406\u89e3\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528C\u6269\u5c55\u6a21\u5757<\/p>\n<\/p>\n

Python\u7684C\u6269\u5c55\u6a21\u5757\u662f\u901a\u8fc7\u7f16\u5199C\u4ee3\u7801\uff0c\u7136\u540e\u5c06\u5176\u7f16\u8bd1\u4e3aPython\u53ef\u8c03\u7528\u7684\u6a21\u5757\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u53ef\u4ee5\u83b7\u5f97\u6700\u9ad8\u7684\u6027\u80fd\u63d0\u5347\uff0c\u56e0\u4e3a\u76f4\u63a5\u5728C\u8bed\u8a00\u5c42\u9762\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n

    \n
  1. \u7f16\u5199C\u4ee3\u7801<\/strong><\/li>\n<\/ol>\n

    \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684C\u4ee3\u7801\uff0c\u5047\u8bbe\u6211\u4eec\u8981\u5b9e\u73b0\u4e00\u4e2a\u8ba1\u7b97\u52a0\u6cd5\u7684\u51fd\u6570\uff1a<\/p>\n<\/p>\n

    \/\/ add.c<\/p>\n
    #include <Python.h><\/p>\n
    static PyObject* add(PyObject* self, PyObject* args) {<\/p>\n
        int a, b;<\/p>\n
        if (!PyArg_ParseTuple(args, "ii", &a, &b)) {<\/p>\n
            return NULL;<\/p>\n
        }<\/p>\n
        return PyLong_FromLong(a + b);<\/p>\n
    }<\/p>\n
    static PyMethodDef AddMethods[] = {<\/p>\n
        {"add", add, METH_VARARGS, "Add two numbers"},<\/p>\n
        {NULL, NULL, 0, NULL}<\/p>\n
    };<\/p>\n
    static struct PyModuleDef addmodule = {<\/p>\n
        PyModuleDef_HEAD_INIT,<\/p>\n
        "add",<\/p>\n
        NULL,<\/p>\n
        -1,<\/p>\n
        AddMethods<\/p>\n
    };<\/p>\n
    PyMODINIT_FUNC PyInit_add(void) {<\/p>\n
        return PyModule_Create(&addmodule);<\/p>\n
    }<\/p>\n
    <\/code><\/pre>\n<\/p>\n
      \n
    1. \u7f16\u5199setup.py\u6587\u4ef6<\/strong><\/li>\n<\/ol>\n
      \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u7f16\u5199\u4e00\u4e2asetup.py\u6587\u4ef6\uff0c\u7528\u4e8e\u6784\u5efa\u548c\u7f16\u8bd1\u6211\u4eec\u7684C\u6269\u5c55\u6a21\u5757\uff1a<\/p>\n<\/p>\n
      from setuptools import setup, Extension<\/p>\n
      module = Extension('add', sources=['add.c'])<\/p>\n
      setup(name='AddModule',<\/p>\n
            version='1.0',<\/p>\n
            description='A simple C extension module',<\/p>\n
            ext_modules=[module])<\/p>\n
      <\/code><\/pre>\n<\/p>\n
        \n
      1. \u7f16\u8bd1\u6a21\u5757<\/strong><\/li>\n<\/ol>\n
        \u5728\u547d\u4ee4\u884c\u4e2d\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u7f16\u8bd1\u6a21\u5757\uff1a<\/p>\n<\/p>\n
        python setup.py build<\/p>\n
        <\/code><\/pre>\n<\/p>\n
          \n
        1. \u5728Python\u4e2d\u4f7f\u7528\u6a21\u5757<\/strong><\/li>\n<\/ol>\n
          \u7f16\u8bd1\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Python\u4e2d\u5bfc\u5165\u5e76\u4f7f\u7528\u8fd9\u4e2a\u6a21\u5757\uff1a<\/p>\n<\/p>\n
          import add<\/p>\n
          result = add.add(3, 4)<\/p>\n
          print("Result:", result)<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u4e8c\u3001\u5229\u7528Cython<\/p>\n<\/p>\n
          Cython\u662f\u4e00\u79cd\u7528\u4e8e\u5c06Python\u4ee3\u7801\u8f6c\u6362\u4e3aC\u4ee3\u7801\u7684\u5de5\u5177\u3002\u4f7f\u7528Cython\uff0c\u53ef\u4ee5\u5c06Python\u4ee3\u7801\u4e2d\u7684\u5173\u952e\u90e8\u5206\u8f6c\u6362\u4e3aC\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<\/p>\n
            \n
          1. \u7f16\u5199Cython\u4ee3\u7801<\/strong><\/li>\n<\/ol>\n
            \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u7b80\u5355\u7684Python\u51fd\u6570\uff0c\u73b0\u5728\u6211\u4eec\u7528Cython\u6765\u5b9e\u73b0\uff1a<\/p>\n<\/p>\n
            # add.pyx<\/p>\n
            def add(int a, int b):<\/p>\n
                return a + b<\/p>\n
            <\/code><\/pre>\n<\/p>\n
              \n
            1. \u7f16\u5199setup.py\u6587\u4ef6<\/strong><\/li>\n<\/ol>\n
              \u6211\u4eec\u9700\u8981\u7f16\u5199\u4e00\u4e2asetup.py\u6587\u4ef6\uff0c\u7528\u4e8e\u6784\u5efa\u548c\u7f16\u8bd1Cython\u4ee3\u7801\uff1a<\/p>\n<\/p>\n
              from setuptools import setup<\/p>\n
              from Cython.Build import cythonize<\/p>\n
              setup(<\/p>\n
                  ext_modules=cythonize("add.pyx")<\/p>\n
              )<\/p>\n
              <\/code><\/pre>\n<\/p>\n
                \n
              1. \u7f16\u8bd1Cython\u4ee3\u7801<\/strong><\/li>\n<\/ol>\n
                \u5728\u547d\u4ee4\u884c\u4e2d\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u7f16\u8bd1Cython\u4ee3\u7801\uff1a<\/p>\n<\/p>\n
                python setup.py build_ext --inplace<\/p>\n
                <\/code><\/pre>\n<\/p>\n
                  \n
                1. \u5728Python\u4e2d\u4f7f\u7528Cython\u6a21\u5757<\/strong><\/li>\n<\/ol>\n
                  \u7f16\u8bd1\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Python\u4e2d\u5bfc\u5165\u5e76\u4f7f\u7528\u8fd9\u4e2a\u6a21\u5757\uff1a<\/p>\n<\/p>\n
                  import add<\/p>\n
                  result = add.add(3, 4)<\/p>\n
                  print("Result:", result)<\/p>\n
                  <\/code><\/pre>\n<\/p>\n
                  \u4e09\u3001\u4f7f\u7528ctypes\u5e93<\/p>\n<\/p>\n
                  ctypes\u5e93\u662fPython\u7684\u6807\u51c6\u5e93\uff0c\u53ef\u4ee5\u7528\u6765\u8c03\u7528C\u8bed\u8a00\u7f16\u5199\u7684\u5171\u4eab\u5e93\uff08\u52a8\u6001\u94fe\u63a5\u5e93\uff09\u3002<\/p>\n<\/p>\n
                    \n
                  1. \u7f16\u5199C\u4ee3\u7801\u5e76\u7f16\u8bd1\u4e3a\u5171\u4eab\u5e93<\/strong><\/li>\n<\/ol>\n
                    \u9996\u5148\uff0c\u6211\u4eec\u7f16\u5199\u4e00\u4e2aC\u51fd\u6570\uff0c\u5e76\u5c06\u5176\u7f16\u8bd1\u4e3a\u5171\u4eab\u5e93\uff1a<\/p>\n<\/p>\n
                    \/\/ add.c<\/p>\n
                    #include <stdio.h><\/p>\n
                    int add(int a, int b) {<\/p>\n
                        return a + b;<\/p>\n
                    }<\/p>\n
                    <\/code><\/pre>\n<\/p>\n
                    \u7f16\u8bd1\u4e3a\u5171\u4eab\u5e93\uff1a<\/p>\n<\/p>\n
                    gcc -shared -o libadd.so -fPIC add.c<\/p>\n
                    <\/code><\/pre>\n<\/p>\n
                      \n
                    1. \u5728Python\u4e2d\u4f7f\u7528ctypes\u8c03\u7528C\u51fd\u6570<\/strong><\/li>\n<\/ol>\n
                      \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528ctypes\u5e93\u6765\u52a0\u8f7d\u548c\u8c03\u7528\u5171\u4eab\u5e93\u4e2d\u7684\u51fd\u6570\uff1a<\/p>\n<\/p>\n
                      import ctypes<\/p>\n
                      \u52a0\u8f7d\u5171\u4eab\u5e93<\/strong><\/h2>\n
                      lib = ctypes.CDLL('.\/libadd.so')<\/p>\n
                      \u8c03\u7528add\u51fd\u6570<\/strong><\/h2>\n
                      result = lib.add(3, 4)<\/p>\n
                      print("Result:", result)<\/p>\n
                      <\/code><\/pre>\n<\/p>\n
                      \u56db\u3001\u901a\u8fc7cffi\u5e93<\/p>\n<\/p>\n
                      cffi\u5e93\u662f\u4e00\u4e2a\u7528\u4e8e\u5728Python\u4e2d\u8c03\u7528C\u4ee3\u7801\u7684\u5e93\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u9ad8\u5c42\u6b21\u7684\u63a5\u53e3\u3002<\/p>\n<\/p>\n
                        \n
                      1. \u7f16\u5199C\u4ee3\u7801<\/strong><\/li>\n<\/ol>\n
                        \u4e0ectypes\u7c7b\u4f3c\uff0c\u6211\u4eec\u9700\u8981\u7f16\u5199\u4e00\u4e2aC\u51fd\u6570\uff0c\u5e76\u7f16\u8bd1\u4e3a\u5171\u4eab\u5e93\uff1a<\/p>\n<\/p>\n
                        \/\/ add.c<\/p>\n
                        #include <stdio.h><\/p>\n
                        int add(int a, int b) {<\/p>\n
                            return a + b;<\/p>\n
                        }<\/p>\n
                        <\/code><\/pre>\n<\/p>\n
                        \u7f16\u8bd1\u4e3a\u5171\u4eab\u5e93\uff1a<\/p>\n<\/p>\n
                        gcc -shared -o libadd.so -fPIC add.c<\/p>\n
                        <\/code><\/pre>\n<\/p>\n
                          \n
                        1. \u5728Python\u4e2d\u4f7f\u7528cffi\u8c03\u7528C\u51fd\u6570<\/strong><\/li>\n<\/ol>\n
                          \u4f7f\u7528cffi\u5e93\uff0c\u6211\u4eec\u53ef\u4ee5\u8c03\u7528\u5171\u4eab\u5e93\u4e2d\u7684\u51fd\u6570\uff1a<\/p>\n<\/p>\n
                          from cffi import FFI<\/p>\n
                          ffi = FFI()<\/p>\n
                          \u58f0\u660e\u51fd\u6570\u539f\u578b<\/strong><\/h2>\n
                          ffi.cdef("int add(int, int);")<\/p>\n
                          \u52a0\u8f7d\u5171\u4eab\u5e93<\/strong><\/h2>\n
                          lib = ffi.dlopen('.\/libadd.so')<\/p>\n
                          \u8c03\u7528add\u51fd\u6570<\/strong><\/h2>\n
                          result = lib.add(3, 4)<\/p>\n
                          print("Result:", result)<\/p>\n
                          <\/code><\/pre>\n<\/p>\n
                          \u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u5728Python\u4e2d\u5d4c\u5165C\u8bed\u8a00\u4ee3\u7801\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u6216\u5b9e\u73b0\u7279\u5b9a\u529f\u80fd\u3002\u4e0d\u540c\u7684\u65b9\u6cd5\u5404\u6709\u4f18\u52a3\uff0c\u9009\u62e9\u9002\u5408\u81ea\u5df1\u9700\u6c42\u7684\u65b9\u5f0f\u8fdb\u884c\u5b9e\u73b0\u3002<\/p>\n<\/p>\n
                          \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                           \u5982\u4f55\u5728Python\u4e2d\u8c03\u7528C\u8bed\u8a00\u7f16\u5199\u7684\u51fd\u6570\uff1f<\/strong>
                          \u8981\u5728Python\u4e2d\u8c03\u7528C\u8bed\u8a00\u7684\u51fd\u6570\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528Python\u7684C\u6269\u5c55\u63a5\u53e3\u3002\u9996\u5148\uff0c\u60a8\u9700\u8981\u521b\u5efa\u4e00\u4e2aC\u6587\u4ef6\uff0c\u5176\u4e2d\u5305\u542b\u60a8\u5e0c\u671b\u8c03\u7528\u7684\u51fd\u6570\u3002\u7136\u540e\uff0c\u4f7f\u7528Python\u7684C API\u7f16\u8bd1\u8be5\u6587\u4ef6\u4e3a\u5171\u4eab\u5e93\u3002\u6700\u540e\uff0c\u901a\u8fc7ctypes\u6216cffi\u6a21\u5757\u5728Python\u4e2d\u52a0\u8f7d\u5e76\u8c03\u7528\u8fd9\u4e9bC\u51fd\u6570\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5bf9\u4e8e\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1\u3002<\/p>\n
                          \u4f7f\u7528Cython\u662f\u5426\u53ef\u4ee5\u7b80\u5316Python\u4e0eC\u7684\u4ea4\u4e92\uff1f<\/strong>
                          Cython\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u60a8\u5728Python\u4ee3\u7801\u4e2d\u76f4\u63a5\u5d4c\u5165C\u4ee3\u7801\u3002\u901a\u8fc7\u5728Cython\u4e2d\u4f7f\u7528\u7c7b\u578b\u58f0\u660e\uff0c\u60a8\u53ef\u4ee5\u83b7\u5f97\u63a5\u8fd1C\u7684\u6027\u80fd\uff0c\u540c\u65f6\u4fdd\u6301Python\u7684\u6613\u7528\u6027\u3002Cython\u4f1a\u81ea\u52a8\u751f\u6210C\u4ee3\u7801\u5e76\u8fdb\u884c\u7f16\u8bd1\uff0c\u4ece\u800c\u7b80\u5316\u4e86Python\u548cC\u4e4b\u95f4\u7684\u4ea4\u4e92\u3002\u4f7f\u7528Cython\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u8c03\u7528C\u5e93\uff0c\u5e76\u5c06Python\u4ee3\u7801\u8f6c\u6362\u4e3aC\u6269\u5c55\u3002<\/p>\n
                          \u5982\u4f55\u8c03\u8bd5\u5728Python\u4e2d\u5d4c\u5165\u7684C\u4ee3\u7801\uff1f<\/strong>
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