在python中调用涉及指针的C函数 [英] Call a C function involving pointers in python

问题描述

我需要从python调用一个C函数，如下所示:

Hi,
I need to call a C function from python which looks like this:

void func(void **buffer, int *szBuffer)
{
    //allocate memory to buffer
    *szBuffer = req_size;
    *buffer = malloc(req_size);

    //buffer filled
}

然后，我必须在python中使用缓冲区.我怎么能做到这一点.请帮忙！

Then i must use the buffer in python. How can i achieve this. Please help!

推荐答案

做到这一点的自然方法"是以Python可能理解的方式包装函数，即编写适当的C 扩展名的扩展名.请参阅:使用C或C ++扩展Python" [

The ''natural way'' to do that would be wrapping your function in way Python may understand, i.e. writing a proper C extension for Python. See: "Extending Python with C or C++"[^].

我不知道python函数的工作原理，但是我建议您获取Python的开发套件.请按照此处提供的说明进行操作.

I dont know how python function works, But I will suggest you to get development kit for Python. Follow the instruction provided there

如果您熟悉Boost，可以尝试使用它.
1. 增强Python. [另一个包装器生成器.这对很多语言都有约束力. [ ^ ]
3. Python在线文档中的一些羊肚菌链接. [ ^ ]

You can try using boost if you are familiar with it.
1. Boost Python.[^]
2. Another wrapper generator. This has binding for a lot of languages.[^]
3. A few morel links from the python online documentation.[^]

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