[section boost/python/dict.hpp]
[section Introduction]
Exposes a [link concepts.objectwrapper.typewrapper_concept_requirements TypeWrapper] for the Python [@http://www.python.org/dev/doc/devel/lib/typesmapping.html `dict`] type.
[endsect]
[section Class `dict`]
Exposes the [@http://www.python.org/dev/doc/devel/lib/typesmapping.html mapping protocol] of Python's built-in `dict` type. The semantics of the constructors and member functions defined below can be fully understood by reading the [link concepts.objectwrapper.typewrapper_concept_requirements TypeWrapper] concept definition. Since `dict` is publicly derived from [link object_wrappers.boost_python_object_hpp.class_object `object`], the public `object` interface applies to `dict` instances as well.
``
namespace boost { namespace python
{
   class dict : public object
   {
      dict();

      template< class T >
      dict(T const & data);

      // modifiers
      void clear();
      dict copy();

      template <class T1, class T2>
      tuple popitem();

      template <class T>
      object setdefault(T const &k);

      template <class T1, class T2>
      object setdefault(T1 const & k, T2 const & d);

      void update(object_cref E);
 
      template< class T >
      void update(T const & E);

      // observers
      list values() const;
    
      object get(object_cref k) const;

      template<class T>
      object get(T const & k) const;

      object get(object_cref k, object_cref d) const;
      object get(T1 const & k, T2 const & d) const;

      bool has_key(object_cref k) const;

      template< class T >
      bool has_key(T const & k) const;

      list items() const;
      object iteritems() const;
      object iterkeys() const;
      object itervalues() const;
      list keys() const;
  };
}}
``
[endsect]
[section Example]
``
using namespace boost::python;
dict swap_object_dict(object target, dict d)
{
    dict result = extract<dict>(target.attr("__dict__"));
    target.attr("__dict__") = d;
    return result;
}
``
[endsect]
[endsect]