我的 main.cpp
文件如下所示:
// Embeding the interpreter into c++
// https://pybind11.readthedocs.io/en/master/advanced/embedding.html
#include <pybind11/embed.h>
#include <iostream>
#include <string>
// Define namespace for pybind11
namespace py = pybind11;
class Vehiclee
{
// Access specifier
public:
// Data Members
int vehicle_id;
std::string vehicle_name;
std::string vehicle_color;
// Member Functions()
void printname()
{
std::cout << "Vehicle id is: " << vehicle_id;
std::cout << "Vehicle name is: " << vehicle_name;
std::cout << "Vehicle color is: " << vehicle_color;
}
};
int main() {
// Initialize the python interpreter
py::scoped_interpreter python;
// Import all the functions from scripts by file name in the working directory
py::module simpleFuncs = py::module::import("simpleFuncs");
// Test if C++ objects can be passed into python functions
Vehiclee car1;
car1.vehicle_id = 1234;
car1.vehicle_name = "VehicleName";
car1.vehicle_color = "red";
py::object car2 = py::cast(car1); // <-- PROBLEM
simpleFuncs.attr("simplePrint")(car2);
return 0;
}
我有一个simpleFuncs.py
:
def simplePrint(argument):
print(argument)
我基本上尝试在 python 中打印该对象,如果可能的话,还尝试在 C++ 中定义的属性。当前的问题在于转换线无法将 C++ 对象转换为 Python 对象。 Here我阅读了如何来回转换,但仍然出现错误,并且不知道该怎么办。
使用 make
编译工作正常,但如果我执行它,我会收到此错误:
terminate called after throwing an instance of 'pybind11::cast_error'
what(): make_tuple(): unable to convert argument of type 'object' to Python object
Aborted (core dumped)
如果你想自己编译并运行它,这里是我的CMakeLists.txt
:
cmake_minimum_required(VERSION 3.0)
project(wrapper)
add_subdirectory(pybind11)
add_executable(wrapper main.cpp)
target_link_libraries(wrapper PRIVATE pybind11::embed)
执行以下步骤:
git clone https://github.com/pybind/pybind11
cmake .
make
提前致谢。
最佳答案
您需要为Vehiclee
添加绑定(bind)代码并导入相应的模块。
请注意,py::cast
调用不是必需的
嵌入式模块文档:https://pybind11.readthedocs.io/en/stable/advanced/embedding.html#adding-embedded-modules
// Embeding the interpreter into c++
// https://pybind11.readthedocs.io/en/master/advanced/embedding.html
#include <pybind11/embed.h>
#include <iostream>
#include <string>
// Define namespace for pybind11
namespace py = pybind11;
class Vehiclee
{
// Access specifier
public:
// Data Members
int vehicle_id;
std::string vehicle_name;
std::string vehicle_color;
// Member Functions()
void printname()
{
std::cout << "Vehicle id is: " << vehicle_id;
std::cout << "Vehicle name is: " << vehicle_name;
std::cout << "Vehicle color is: " << vehicle_color;
}
};
PYBIND11_EMBEDDED_MODULE(embeded, module){
py::class_<Vehiclee> animal(module, "Vehiclee");
}
int main() {
// Initialize the python interpreter
py::scoped_interpreter python;
// Import all the functions from scripts by file name in the working directory
auto simpleFuncs = py::module::import("simpleFuncs");
auto embeded = py::module::import("embeded");
// Test if C++ objects can be passed into python functions
Vehiclee car1;
car1.vehicle_id = 1234;
car1.vehicle_name = "VehicleName";
car1.vehicle_color = "red";
simpleFuncs.attr("simplePrint")(car1);
return 0;
}
可能的输出:
<embeded.Vehiclee object at 0x7f8afb59aa78>
关于python - 在 python 中使用 C++ 对象与 pybind11,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56953822/