How to expose stdvectorint as a Python list using SWIG смотреть онлайн

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exposing a std::vector int as a python list using swig (simplified wrapper and interface generator) allows you to seamlessly integrate c++ code with python. swig is a powerful tool for creating wrappers around c++ libraries, making it possible to use c++ classes and data structures in python. in this tutorial, we'll walk through the steps to expose a std::vector int to python using swig, with code examples along the way.
before you begin, make sure you have the following installed:
c++ compiler: you need a c++ compiler like g++ or clang.
swig: install swig on your system. you can download it from swig's official website.
python: ensure you have python installed. swig supports both python 2 and python 3.
let's start by creating a c++ header file (vector_exposer.h) that contains the declaration of a function to create and return a std::vector int .
now, create a c++ source file (vector_exposer.cpp) to implement the function defined in the header file.
next, create a swig interface file (vector_exposer.i) that specifies how swig should generate the wrapper code.
open a terminal and navigate to the directory containing your files. run the following command to generate the wrapper code using swig:
this command tells swig to create a c++ wrapper file named vector_exposer_wrap.cpp for python.
compile the c++ source code and the generated wrapper code using your c++ compiler:
replace /path/to/python with the path to your python installation and /path/to/swig with the path to your swig installation. also, replace pythonx.y with your python version (e.g., python3.8).
now, you can create a python script to test the swig-generated wrapper:
run the python script:
you should see the output [1, 2, 3], which indicates that the std::vector int has been successfully exposed as a python list.
that's it! you've exposed a c++ std::vector int as a python list using swig. this allows you to seamlessly work with c++ data structures in your python code, making it easier to leverage exis ...