(self, dbref, **kwargs)
return self[dbref.collection].find_one({"_id": dbref.id}, **kwargs)
Dereference a :class:`~bson.dbref.DBRef`, getting the
        document it points to.

        Raises :class:`TypeError` if `dbref` is not an instance of
        :class:`~bson.dbref.DBRef`. Returns a document, or ``None`` if
        the reference does not point to a valid document.  Raises
        :class:`ValueError` if `dbref` has a database specified that
        is different from the current database.

        :Parameters:
          - `dbref`: the reference
          - `**kwargs` (optional): any additional keyword arguments
            are the same as the arguments to
            :meth:`~pymongo.collection.Collection.find`.
Dereference a :class:`~bson.dbref.DBRef`, getting the
        document it points to.
Dereference a : class : ~bson . dbref . DBRef getting the document it points to .
def dereference(self, dbref, **kwargs):
        """Dereference a :class:`~bson.dbref.DBRef`, getting the
        document it points to.

        Raises :class:`TypeError` if `dbref` is not an instance of
        :class:`~bson.dbref.DBRef`. Returns a document, or ``None`` if
        the reference does not point to a valid document.  Raises
        :class:`ValueError` if `dbref` has a database specified that
        is different from the current database.

        :Parameters:
          - `dbref`: the reference
          - `**kwargs` (optional): any additional keyword arguments
            are the same as the arguments to
            :meth:`~pymongo.collection.Collection.find`.
        """
        if not isinstance(dbref, DBRef):
            raise TypeError("cannot dereference a %s" % type(dbref))
        if dbref.database is not None and dbref.database != self.__name:
            raise ValueError("trying to dereference a DBRef that points to "
                             "another database (%r not %r)" % (dbref.database,
                                                               self.__name))
        return self[dbref.collection].find_one({"_id": dbref.id}, **kwargs)
def dereference ( self , dbref , * * kwargs ) : if not isinstance ( dbref , DBRef ) : raise TypeError ( "cannot dereference a %s" % type ( dbref ) ) if dbref . database is not None and dbref . database != self . __name : raise ValueError ( "trying to dereference a DBRef that points to " "another database (%r not %r)" % ( dbref . database , self . __name ) ) return self [ dbref . collection ] . find_one ( { "_id" : dbref . id } , * * kwargs )