C++ in Python the Easy Way! #pybind11
Why Stack Overflow recommends it
Stack Overflow users cite it as the tutorial they followed when building their first pybind11 module, usually in questions where the build or import then fails.
Recommended by 1 people across 1 different months, 2023 to 2023.
What it is
A roughly 10-minute tutorial from the Jack of Some channel on writing Python bindings for C++ code with pybind11. It starts with a minimal example and covers classes, STL containers, NumPy support, properties and the GIL, with a CMake setup and a code gist provided.
What people said
Recommends Luzian · 2023-03 · Stack Overflow · on “Creating Python bindings for CPP code and then importing it into a Python script”
I don't know if you are using pybind11 as a static library or not. If so, then the code snippet I am sending for CMakeLists.txt is enough to call the wrapper. cmake_minimum_required(VERSION 3.20) project(Project LANGUAGES CXX C) set(ENV{Path} PATH) add_subdirectory("{pybind11Path}\\pybind11") add_subdirectory("{srcPath}\\srcFolder") pybind11_add_module(Project {srcPath}/src.cpp) About PYBIND11_MODULE You need to call it inside of the source file, which you want to be wrapped with Python, at least that works. Next point is about Python distribution along with dev-tools which must be present in Environment Path, because pybind11 calls Python.h without that file it's impossible to work with pyb
Cites gl13 · 2023-06 · Stack Overflow · on “Error importing python module made by pybind11”
I followed the steps in this video [this video] , and was able to successfully import a python module made by pybind11 and call the function add() . When I try to refactor my code and move the add() function to a separate file, I get the following error message: >>> import pybindings Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: dlopen(/Users/user_name/Desktop/project/build/pybindings.cpython-39-darwin.so, 0x0002): symbol not found in flat namespace (__Z3addii) This is my cpp file: #include <pybind11/pybind11.h> #include <pybind11/stl.h> #include "refactored_code.hpp" //this contains the add() function PYBIND11_MODULE(pybindings, m) { m.doc() = "test of pybin
Cites DJames · 2023-07 · Stack Overflow · on “Following this simple pybind11 tutorial gives "ImportError: dynamic module does not define module export function"”
I'm following this short tutorial [this video] for building a python module from c++ code. I have this cpp file #include <pybind11/pybind11.h> namespace py = pybind11; float some_fn(float arg1, float arg2) { return arg1 + arg2; } PYBIND11_MODULE(module_name, handle) { handle.doc() = "This is the module docs."; handle.def("some_fn_py", &some_fn, "some fn"); } and this cmake file cmake_minimum_required(VERSION 3.4) project(pybind_test) add_subdirectory(pybind11) pybind11_add_module(pybind_test main.cpp) The module is produced, but when I try to import it in a python script import sys import os sys.path.append(os.path.join(os.path.dirname(__file__),'.')) import pybind_test I get the error "ImportErr