如何在C中加载自定义python模块

问题描述

到目前为止，我只是尝试获取在python文档中给出，用于在C语言中嵌入python模块才能正常工作。我的问题是我不知道将python脚本放在哪里。我的最终目标是要通过执行 PyImport_Import（将完整的python程序包（带有 __ init __。py 和各种模块的文件夹）加载到C中。 ..）。但是现在，请让我知道将显示的脚本（文件名，路径等）放在哪里，以便运行给定的C程序。

I am , as of now, simply trying to get this example given in the python docs for embedding a python module in C to work. My problem is I can't figure out where to put the python script. My ultimate goal is to have a full python package (folder with a __init__.py and various modules) to be loadable in C by executing PyImport_Import(...). But for now, please just let me know where to put the script shown (filename, path, etc) so that the C program given will run.

编辑

我应该指出我尝试过的内容。我尝试将 multiply.py 文件放在本地目录中，并将其放在名为 multiply 的子目录中在 __ init __。py 文件中。在所有这些情况下，我都会收到 ImportError：没有名为乘法的模块

I should point out what I've tried. I have tried putting a multiply.py file in the local directory, as well as putting it in a subdirectory called multiply in an __init__.py file. In all of these cases, I get ImportError: No module named multiply

推荐答案

我认为它应该在同一目录中，或者在 sys.path 中，因为它按名称加载模块，这应该可以工作：

I think it should be in the same directory or in sys.path as it loads a module by name, this should work:

./call multiply multiply 5 6

更新：如果我将当前目录显式添加到 sys.path ，它将起作用：

Update: if I add the current directory explicitly to sys.path it works:

Py_Initialize();
PyRun_SimpleString("import sys");
PyRun_SimpleString("sys.path.append(\".\")");

打印以下内容：

./call multiply multiply 5 6
('Will compute', 5, 'times', 6)
Result of call: 30

更新：我问了一个相关的问题，看来如果您只添加 PySys_SetArgv 相反，它可以工作：

Update: I've asked a relevant question and it seems that if you just add PySys_SetArgv instead it works:

Py_Initialize();
PySys_SetArgv(argc, argv);

此处提及原因：

这就是问题所在您也可以在那里查看答案：

And this is the question you can check the answers there too:

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