使用boost实现python调用c++

使用boost.python实现python调用c++代码

编写c++代码后，编译成动态链接库，然后python可以直接调用

参考http://www.boost.org/doc/libs/1_61_0/libs/python/doc/html/index.html

代码中实现了python参数，到c++参数的转化，可以把一个python的可迭代对象转化成c++中的list map vector等

就像python基础教程上写的，python开发中最完美的就是关键代码用c++，这样兼具性能和开发效率！！

下面是c++代码：

#include 
#include 
#include 

#include 
#include 
#include 

using namespace std;

bool align(string a, string b) {
    vector left;
    vector right;

    string spChar(",\t ");
    vector splitResult;
    boost::split(splitResult, a, boost::is_any_of(spChar));
    BOOST_FOREACH(std::string& s, splitResult) {
        boost::trim(s);
        left.push_back(boost::lexical_cast(s));
        cout << left[ left.size()-1 ]<< endl;
    }

    splitResult.clear();
    boost::split(splitResult, b, boost::is_any_of(spChar));
    BOOST_FOREACH(std::string& s, splitResult) {
        boost::trim(s);
        right.push_back(boost::lexical_cast(s));
        cout << right[ right.size()-1 ] << endl;
    }
    return true;
}


void pythonIterable2Vec( boost::python::object o, vector &vec) {
    try {
        boost::python::object iter_obj = boost::python::object( boost::python::handle<>( PyObject_GetIter( o.ptr() ) ) );
        while( 1 ) {
            boost::python::object obj = boost::python::extract( iter_obj.attr( "next" )() ); // Should always work
            int val = boost::python::extract( obj ); // Should launch an exception if you wannot extract an int ...
            vec.push_back(val);
            cout << val << endl;
        }
    }
    catch( ... ) {
        PyErr_Clear(); // If there is an exception (no iterator, extract failed or end of the list reached), clear it and exit the function
        return;
    }
}

bool alignVector(boost::python::object l, boost::python::object r) {
    vector left;
    vector right;
    pythonIterable2Vec(l, left);
    pythonIterable2Vec(r, right);
    return true;
}

BOOST_PYTHON_MODULE(test)
{
    using namespace boost::python;
        def("align", align);
        def("alignVector", alignVector);
}

编译命令：

g++ -std=c++11 -fPIC test.cpp -o test.so -shared -I/usr/include/python2.7 -lboost_python

python使用：

>>> import test
>>> dir(test)
['__doc__', '__file__', '__name__', '__package__', 'align', 'alignVector']
>>> test.align("1,2,3", "4,6,5")
1
2
3
4
6
5
True
>>> test.alignVector([1,3,2], [4,5,6])
1
3
2
4
5
6
True
>>> a = {1,3,4}
>>> b = {2,3,4}
>>> a
set([1, 3, 4])
>>> b
set([2, 3, 4])
>>> test.alignVector(a, b)
1
3
4
2
3
4
True
>>>