嵌入Python 3-没有内置函数? [英] Embedding Python 3 - no builtins?

问题描述

脱发很多之后，我正在寻求帮助.

After much hair loss, I'm looking for help.

我将Python 3.3嵌入到一个简单的应用程序中.一个不寻常的方面是Python不在路上，但似乎一切正常.但是由于某种原因，什么也无法执行.

I'm embedding Python 3.3 into a simple app. One unusual aspect is Python isn't on the path, but it all seems to load OK. But for some reason, nothing can be executed.

下面是一个显示错误的小示例程序:

Below is a small example program that shows the error:

编辑:我知道引用计数太可怕了-这只是一个简单的例子.

EDIT: I know the reference counting is horrible -- this is just a simple example.

SetDllDirectory(L"D:\\dev\\python\\python33"); //so Python33.dll can be delay-loaded since not in the path

Py_Initialize();
PyObject* pGlobals = PyDict_New();
if (PyDict_GetItemString(pGlobals, "__builtins__") == NULL) 
{
    PyObject* pMod = PyImport_ImportModule("builtins"); <-- always succeeds
    if(NULL != pMod)
        PyDict_SetItemString(pGlobals, "__builtins__", pMod);
}

PyObject* pResult = PyRun_String("import sys", 0, pGlobals, pGlobals); <-- always fails

if (PyErr_Occurred()) 
{
    //PyErr_Fetch returns:
    //<class 'SyntaxError'>  
    //('invalid syntax', ('<string>', 1, 6, 'import sys'))
}

我尝试了多种导入和定义内置插件的方法，包括如下所示的各种尝试:

I have tried a variety of ways to import and define builtins, including various attempts shown below:

PyObject* pMod = PyImport_ImportModule("builtins");
PyDict_SetItemString(pGlobals, "builtins", pMod);
PyDict_SetItemString(pGlobals, "__builtins__", pMod);

PyDict_SetItemString(pGlobals, "__builtins__", PyEval_GetBuiltins());
PyDict_SetItemString(pGlobals, "builtins", PyEval_GetBuiltins());

它们都不起作用-每个错误都相同.

None of them work -- the error is identical with each.

我做错了什么?与路径相关吗?关于内建函数的事情我做错了吗?

What am I doing wrong? Is it path related? Something about builtins that I'm doing wrong?

推荐答案

尝试将开始符号设置为 PyEval_GetBuiltins .

Try it with the start symbol set to Py_file_input and use PyEval_GetBuiltins.

要设置的正确dict键为"__builtins__".

the correct dict key to set is "__builtins__".

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