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Started documenting Python bindings

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libs/graph/src/python/basic_graph.cpp, libs/graph/src/python/basic_graph.hpp:
  - Allow one to build a graph from anything that looks like a Python list or
    tuple.


[SVN r28324]
This commit is contained in:
Douglas Gregor
2005-04-19 17:01:07 +00:00
parent 003e90151e
commit 631d35bcc2
13 changed files with 314 additions and 24 deletions
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29
src/python/basic_graph.cpp
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@@ -113,6 +113,31 @@ basic_graph<DirectedS>::basic_graph()
: inherited(), dp(build_string_property_maps<DirectedS>(this))
{ }
template<typename DirectedS>
basic_graph<DirectedS>::basic_graph(::boost::python::object l)
: inherited()
{
using boost::python::object;
std::map<object, vertex_descriptor> verts;
int len = ::boost::python::extract<int>(l.attr("__len__")());
for (int i = 0; i < len; ++i) {
vertex_descriptor u, v;
object up = l[i][0];
object vp = l[i][1];
typename std::map<object, vertex_descriptor>::iterator pos;
pos = verts.find(up);
if (pos == verts.end()) u = verts[up] = add_vertex();
else u = pos->second;
pos = verts.find(vp);
if (pos == verts.end()) v = verts[vp] = add_vertex();
else v = pos->second;
add_edge(u, v);
}
}
template<typename DirectedS>
basic_graph<DirectedS>::basic_graph(const std::string& filename,
graph_file_kind kind)
@@ -527,13 +552,14 @@ template<typename Graph> void export_in_graph();
template<typename DirectedS>
void export_basic_graph(const char* name)
{
using boost::python::arg;
using boost::python::class_;
using boost::python::init;
using boost::python::object;
using boost::python::range;
using boost::python::scope;
using boost::python::self;
using boost::python::arg;
using boost::python::tuple;
typedef basic_graph<DirectedS> Graph;
typedef typename Graph::Vertex Vertex;
@@ -545,6 +571,7 @@ void export_basic_graph(const char* name)
scope s(
class_<basic_graph<DirectedS> >(name)
// Constructors
.def(init<object>())
.def(init<std::string, graph_file_kind>())
.def(init<erdos_renyi, std::size_t>(
(arg("generator"), arg("seed") = 1)))

1
src/python/basic_graph.hpp
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@@ -228,6 +228,7 @@ class basic_graph
adjacency_iterator;
basic_graph();
basic_graph(::boost::python::object);
basic_graph(const std::string& filename, graph_file_kind kind);
basic_graph(erdos_renyi, int seed);
basic_graph(power_law_out_degree, int seed);