diff --git a/include/boost/python/args.hpp b/include/boost/python/args.hpp
new file mode 100644
index 00000000..b584506b
--- /dev/null
+++ b/include/boost/python/args.hpp
@@ -0,0 +1,19 @@
+// Copyright David Abrahams 2002. Permission to copy, use,
+// modify, sell and distribute this software is granted provided this
+// copyright notice appears in all copies. This software is provided
+// "as is" without express or implied warranty, and with no claim as
+// to its suitability for any purpose.
+#ifndef ARGS_DWA2002323_HPP
+# define ARGS_DWA2002323_HPP
+# include <boost/mpl/type_list.hpp>
+
+namespace boost { namespace python { 
+
+// A type list for specifying arguments
+template < BOOST_MPL_LIST_DEFAULT_PARAMETERS(typename A, ::boost::mpl::null_argument) >
+struct args : ::boost::mpl::type_list< BOOST_MPL_LIST_PARAMETERS(A) >::type
+{};
+
+}} // namespace boost::python
+
+#endif // ARGS_DWA2002323_HPP
diff --git a/include/boost/python/bases.hpp b/include/boost/python/bases.hpp
new file mode 100644
index 00000000..468c6744
--- /dev/null
+++ b/include/boost/python/bases.hpp
@@ -0,0 +1,58 @@
+// Copyright David Abrahams 2002. Permission to copy, use,
+// modify, sell and distribute this software is granted provided this
+// copyright notice appears in all copies. This software is provided
+// "as is" without express or implied warranty, and with no claim as
+// to its suitability for any purpose.
+#ifndef BASES_DWA2002321_HPP
+# define BASES_DWA2002321_HPP
+# include <boost/type_traits/object_traits.hpp>
+# include <boost/mpl/type_list.hpp>
+# include <boost/mpl/select_type.hpp>
+# include <boost/mpl/identity/identity.hpp>
+
+namespace boost { namespace python { 
+  // A type list for specifying bases
+  template < BOOST_MPL_LIST_DEFAULT_PARAMETERS(typename B, ::boost::mpl::null_argument) >
+  struct bases : ::boost::mpl::type_list< BOOST_MPL_LIST_PARAMETERS(B) >::type
+  {};
+
+  namespace detail
+  {
+# ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+    template <class T> struct specifies_bases
+    {
+        BOOST_STATIC_CONSTANT(bool, value = false);
+    };
+    template < BOOST_MPL_LIST_PARAMETERS(class B) >
+    struct specifies_bases< bases< BOOST_MPL_LIST_PARAMETERS(B) > >
+    {
+        BOOST_STATIC_CONSTANT(bool, value = true);
+    };
+# else
+    template < BOOST_MPL_LIST_PARAMETERS(class B) >
+    static char is_bases_helper(bases< BOOST_MPL_LIST_PARAMETERS(B) > const&);
+    
+    static char (& is_bases_helper(...) )[256];
+
+    template <class T> struct specifies_bases
+    {
+     private:
+        static typename add_reference<T>::type make();
+        BOOST_STATIC_CONSTANT(bool, non_ref = !is_reference<T>::value);
+     public:
+        BOOST_STATIC_CONSTANT(bool, value = non_ref & (sizeof(is_bases_helper(make())) == 1));
+    };
+# endif
+    template <class T, class Prev = bases<> >
+    struct select_bases
+        : mpl::select_type<
+                specifies_bases<T>::value
+                , T
+                , Prev
+          >
+    {
+    };
+  }
+}} // namespace boost::python
+
+#endif // BASES_DWA2002321_HPP