Difference between revisions of "Interfacing C++ and Python"

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* [http://www.boost.org/doc/libs/release/libs/python/doc interfacing C++ and Python] via Boost
 
* [http://www.boost.org/doc/libs/release/libs/python/doc interfacing C++ and Python] via Boost
 +
* [http://www.boostpro.com/writing/bpl.html#introduction Introduction to Boost.Python]
  
 
== Quick start ==
 
== Quick start ==
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</source>
 
</source>
  
which runs as
+
which runs under python as
 
<source lang="py">
 
<source lang="py">
 
In [1]: import hello
 
In [1]: import hello

Latest revision as of 10:40, 14 October 2011

References

Quick start

  • command line under linux
:> g++ -shared myfile.cpp -I/usr/include/python2.6 -lboost_python -o myfile.so -fPIC


This compiles the basic example below:

//         myfile.h    
struct World
{
  void set(std::string msgin) {this->msg=msgin ;}
  std::string greet() {return msg ;}
  std::string msg;
} ;

//         myfile.cpp   #include <boost/python.hpp>

#include "myfile.h"

using namespace boost::python;

BOOST_PYTHON_MODULE(hello)
{
  def("greet", greet, "return one of three parts of a greeting");
  class_<World>("World")
    .def("greet",&World::greet)
    .def("set",&World::set)
    ; 
}

which runs under python as

In [1]: import hello
In [2]: planet = hello.World()
In [3]: planet.set('howdy')
In [4]: planet.greet()
Out[4]: 'howdy'