c++ - 在Python3中的C++中将std::string转换为PyObject

Question

我正在尝试转换std::string to PyObject。

std::string st = jsp.updateRoot(people, people);
PyObject* pValue = PyBytes_AsString(st);

使用上述方法无法使用。
如何转换？

Answer 1

来自文件:

char* PyBytes_AsString(PyObject *o)

Return a pointer to the contents of o. The pointer refers to the internal buffer of o, which consists of len(o) + 1 bytes. The last byte in the buffer is always null, regardless of whether there are any other null bytes. The data must not be modified in any way, unless the object was just created using PyBytes_FromStringAndSize(NULL, size). It must not be deallocated. If o is not a bytes object at all, PyBytes_AsString() returns NULL and raises TypeError.

这是OP的错误方向。
相反转换的功能是

PyObject* PyBytes_FromString(const char *v)

Return value: New reference.

Return a new bytes object with a copy of the string v as value on success, and NULL on failure. The parameter v must not be NULL; it will not be checked.