Writing extended Python modules with C + + boost

Python is powerful, but existing modules may not meet the people's growing material and cultural needs, and sometimes need to write extension modules to improve.

There are a number of possible options: SWIG, Weave, cTYPES, BOOST ...

Boost is undoubtedly one of the fastest development scenarios. The following describes how the simplest C + + HelloWorld program becomes a python module.

1. Install Python, Boost

Here with the Linux environment. Both Python and boost are installed in source code, with the following URLs:

python2.6:https://www.python.org

Boost1.57.0:http://sourceforge.net/projects/boost/?source=typ_redirect

2. Writing Helloworld.cpp

#define Boost_python_source#include <boost/python.hpp> #include <iostream>using namespace std;using Namespace boost::p ython;void hello_func () {        cout<< "Hello boost Python" <<ENDL;} Boost_python_module (boostpy) {        def ("Hello", Hello_func, "Function ' s targets ...");}

3. Compiling as a dynamic library

Command line execution:

g++-shared-o Boostpy.so-fpic-i/yourpythonincludepath/helloworld.cpp-lpython2.6-lboost_python

Generated a dynamic link library boostpy.so

4. Calling hello in the python environment

>>> Import boostpy>>> boostpy.     Hello () Hello boost python>>>help (boostpy) Help on module Boostpy:name boostpyfile/...../boostpy.sofunctions        Hello (...)            Hello ()-none:function ' s targets ... C + + signature:void Hello () (END)

Summary: Here is only the simplest call, without the problem of parameter passing. You'll continue to look at how to share data between C + + and Python later.

Writing extended Python modules with C + + boost