一定要std::list吗？如果使用，std::vector则可以使用boost::python::vector_indexing_suite包装列表。
如果必须使用std::list，则需要创建一个std::list使用pythonlist方法包装功能的帮助程序类。这可能相当复杂，但是可行。
#include <list>
#include <algorithm>
#include <boost/python.hpp>
template<class T>
struct listwrap
{
typedef typename T::value_type value_type;
typedef typename T::iterator iter_type;
static void add(T & x, value_type const& v)
{
x.push_back(v);
}
static bool in(T const& x, value_type const& v)
{
return std::find(x.begin(), x.end(), v) != x.end();
}
static int index(T const& x, value_type const& v)
{
int i = 0;
for(T::const_iterator it=x.begin(); it!=x.end(); ++it,++i)
if( *it == v ) return i;
PyErr_SetString(PyExc_ValueError, "Value not in the list");
throw boost::python::error_already_set();
}
static void del(T& x, int i)
{
if( i<0 )
i += x.size();
iter_type it = x.begin();
for (int pos = 0; pos < i; ++pos)
++it;
if( i >= 0 && i < (int)x.size() ) {
x.erase(it);
} else {
PyErr_SetString(PyExc_IndexError, "Index out of range");
boost::python::throw_error_already_set();
}
}
static value_type& get(T& x, int i)
{
if( i < 0 )
i += x.size();
if( i >= 0 && i < (int)x.size() ) {
iter_type it = x.begin();
for(int pos = 0; pos < i; ++pos)
++it;
return *it;
} else {
PyErr_SetString(PyExc_IndexError, "Index out of range");
throw boost::python::error_already_set();
}
}
static void set(T& x, int i, value_type const& v)
{
if( i < 0 )
i += x.size();
if( i >= 0 && i < (int)x.size() ) {
iter_type it = x.begin();
for(int pos = 0; pos < i; ++pos)
++it;
*it = v;
} else {
PyErr_SetString(PyExc_IndexError, "Index out of range");
boost::python::throw_error_already_set();
}
}
};
template<class T>
void export_STLList(const char* typeName)
{
using namespace boost::python;
class_<std::list<T> >(typeName)
.def("__len__", &std::list<T>::size)
.def("clear", &std::list<T>::clear)
.def("append", &listwrap<T>::add,
with_custodian_and_ward<1,2>()) // to let container keep value
.def("__getitem__", &listwrap<T>::get,
return_value_policy<copy_non_const_reference>())
.def("__setitem__", &listwrap<T>::set,
with_custodian_and_ward<1,2>()) // to let container keep value
.def("__delitem__", &listwrap<T>::del)
.def("__contains__", &listwrap<T>::in)
.def("__iter__", iterator<std::list<T> >())
.def("index", &listwrap<T>::index);
}
typedef std::list<int> intlist;
export_STLList<int>("intlist");
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