我试图在我的系统中实现一个C语言形式的算法，这个系统使用python编程语言运行。我试图实现Python C API，目的是让我的算法在python环境中运行。结果它产生了一个错误，我已经尝试修复了几天，但仍然找不到它。下面是我得到的错误结果：
$ pip install .
Processing c:\users\angga danar\documents\skripsi\project\gimli
Preparing metadata (setup.py) ... done
Installing collected packages: gimlihash
DEPRECATION: gimlihash is being installed using the legacy 'setup.py install' method, because it does not have a 'pyproject.toml' and the 'wheel' package is not installed. pip 23.1 will enforce this behaviour change. A possible replacement is to enable the '--use-pep517' option. Discussion can be found at https://github.com/pypa/pip/issues/8559
Running setup.py install for gimlihash ... error
error: subprocess-exited-with-error
× Running setup.py install for gimlihash did not run successfully.
│ exit code: 1
╰─> [17 lines of output]
running install
C:\python3.10\lib\site-packages\setuptools\command\install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
warnings.warn(
running build
running build_ext
building 'gimli' extension
creating build
creating build\temp.win-amd64-cpython-310
creating build\temp.win-amd64-cpython-310\Release
creating build\temp.win-amd64-cpython-310\Release\Hash
"C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\bin\HostX86\x64\cl.exe" /c /nologo /O2 /W3 /GL /DNDEBUG /MD -IC:\python3.10\include -IC:\python3.10\Include "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Auxiliary\VS\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.22621.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\um" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\shared" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\winrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\cppwinrt" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" /TcHash/hashing.c /Fobuild\temp.win-amd64-cpython-310\Release\Hash/hashing.obj
hashing.c
creating C:\Users\Angga Danar\Documents\skripsi\Project\Gimli\build\lib.win-amd64-cpython-310
"C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\bin\HostX86\x64\link.exe" /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO /LIBPATH:C:\python3.10\libs /LIBPATH:C:\python3.10 /LIBPATH:C:\python3.10\PCbuild\amd64 "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\ATLMFC\lib\x64" "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\lib\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\lib\um\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.22621.0\ucrt\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\\lib\10.0.22621.0\\um\x64" /EXPORT:PyInit_gimli build\temp.win-amd64-cpython-310\Release\Hash/hashing.obj /OUT:build\lib.win-amd64-cpython-310\gimli.cp310-win_amd64.pyd /IMPLIB:build\temp.win-amd64-cpython-310\Release\Hash\gimli.cp310-win_amd64.lib
LINK : error LNK2001: unresolved external symbol PyInit_gimli
build\temp.win-amd64-cpython-310\Release\Hash\gimli.cp310-win_amd64.lib : fatal error LNK1120: 1 unresolved externals
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2022\\BuildTools\\VC\\Tools\\MSVC\\14.34.31933\\bin\\HostX86\\x64\\link.exe' failed with exit code 1120
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
error: legacy-install-failure
× Encountered error while trying to install package.
╰─> gimlihash
note: This is an issue with the package mentioned above, not pip.
hint: See above for output from the failure.下面是hashing. c文件的代码：
char print_tex(char* string, char* hex_string) {
uint8_t output[32];
size_t l = strlen(string);
Gimli_hash(string, strlen(string), output, 32);
int i;
for (i = 0;i < 32;++i)
fprintf( stderr, "%02x",output[i]);
hex_string[i] = (char)output[i];
return 0;
}
static PyObject* hash(PyObject *self, PyObject *args) {
char *str;
char final[32];
if (!PyArg_ParseTuple(args, "s", &str)){
return NULL;
}
print_tex(str, final);
return PyUnicode_FromString(final);
}
static PyMethodDef hashMethods[] = {
{"gimli", hash, METH_VARARGS, "Gimli Algorithm Hash"},
{NULL, NULL, 0, NULL}
};
static struct PyModuleDef hashModule = {
PyModuleDef_HEAD_INIT,
"hashModule",
"hash module",
-1,
hashMethods
};
PyMODINIT_FUNC PyInit_hash(void) {
return PyModule_Create(&hashModule);
}基本上，我实现了一个散列算法，其中输入是字符串形式，结果输出也是算法的结果字符串形式。我尝试使用pip install .命令安装以下setup.py文件
from setuptools import setup, Extension
setup(name = "gimlihash",
version = "0.1",
ext_modules = [Extension("gimli", ["Hash/hashing.c"])])希望我可以为我的项目创建一个本地库，我可以调用库。请帮助，因为我仍然是一个初学者。
1条答案
按热度按时间ht4b089n1#
根据[Python. Docs]：用C或C++扩展Python-模块的方法表和初始化函数（强调是我的）：
该结构必须依次传递给模块初始化函数中的解释器。初始化函数必须命名为 * PyInit_name（）*，其中 * name * 是模块的名称，并且应该是模块文件中定义的唯一非
static项：因此，存在以下差异：
为了使事情 * OK *，2必须匹配，因此：
Extension("hash", ...）PyMODINIT_FUNC PyInit_gimli(...，正如@RetiredNinja在评论中建议的那样）因为我们讨论的是扩展模块（很可能是包的一部分），所以有一个惯例（不一定每个人都遵循），就是它们的名字以 * UnderScore （_）开头。因此，我建议将您的模块命名为**_hash***。
可能还需要检查：