文の単語をトークンとして、従属関係をエッジとしてグラフを生成します。
この情報は、（（word、index）、（word、index）、relation）タプルの形式の外部ツールから取得されます。各単語には多くの依存関係があり、単語ごとに1つのノードのみが必要です。
各依存関係を処理するときにIDで検索したいのですが、find_vertex（）を使用しようとすると、次の例外が発生します。
TypeError: No registered converter was able to extract a C++ reference to type graph_tool::GraphInterface from this Python object of type Graph
これはコードです：
def graph(self, sentence, sentenceNamespace="sentence", separator="_"):
graph = Graph()
root_node = graph.add_vertex()
# Create a link to Root Node
graph.graph_properties['root'] = graph.new_graph_property("python::object", root_node)
# Create Node's properties
graph.vertex_properties['id'] = graph.new_vertex_property("string")
graph.vertex_properties['form'] = graph.new_vertex_property("string")
graph.vertex_properties['ord'] = graph.new_vertex_property("int64_t")
# Create edge's properties
graph.edge_properties['type'] = graph.new_edge_property("string")
# Create the root node
graph.vertex_properties['form'][root_node] = "S"
graph.vertex_properties['ord'][root_node] = -1
# Find or create the dependant and governor nodes and link with a new edge
for dependency in self.dependency(sentence):
dependency_governor = dependency[0]
# Governor's generated ID
governor_name = "{1}{0}{2[0]}{0}{1[1]}".format(separator, sentenceNamespace,dependency_governor )
dependency_dependant = dependency[1]
# Dependant's generated ID
dependant_name = "{1}{0}{2[0]}{0}{1[1]}".format(separator, sentenceNamespace, dependency_dependant)
# Relation Type
relation = dependency[2]
# This is the problematic Line ################################################
governor = find_vertex(graph, graph.vertex_properties['id'], governor_name)
##############################################################
# If search is successful use the first node else create a new one
if governor :
governor = governor[0]
else:
governor = graph.add_vertex()
graph.vertex_properties['id'][governor] = governor_name
graph.vertex_properties['form'][governor] = dependency_governor[0]
graph.vertex_properties['ord'][governor] = dependency_governor[1]
dependant = find_vertex(graph, 'id', dependant_name)
# If search is successful use the first node else create a new one
if dependant :
dependant = dependant[0]
else:
dependant = graph.add_vertex()
graph.vertex_properties['id'][dependant] = dependant_name
graph.vertex_properties['form'][dependant] = dependant_dependant[0]
graph.vertex_properties['ord'][dependant] = dependency_dependant[1]
# Link the nodes with the new dependency relation
dependency_edge = graph.add_edge(governor, dependant)
graph.edge_properties['type'][dependency_edge]= relation
return graph