This module provide a set of concepts to add properties to graph elements

class core.graph.property_graph.PropertyGraph(graph=None)

Bases: core.graph.interface.property_graph.IPropertyGraph, core.graph.graph.Graph

simple implementation of IPropertyGraph using dict as properties and two dictionaries to maintain these properties

add_edge_property(property_name)

add a new map between eid and a data do not fill this property for any edge

add_vertex_property(property_name)

add a new map between vid and a data do not fill this property for any vertex

clear()

remove all vertices and edges don't change references to objects

clear_edges()

remove all the edges of the graph don't change references to objects

edge_property(property_name)

return a map between eid and data for all edges where property_name is defined

Return type:dict of {eid:data}

edge_property_names()

iter on names of all property maps defined on edge return iter of keys

extend(graph)

add the specified graph to self, create new vid and eid

Parameters:graph (Graph) -- the graph to add Returns:two dictionnary specifying correspondence between graph id and self id Return type:({vid:vid},{eid:eid})

remove_edge(eid)

remove a specified edge from the graph

Parameters:eid (eid) -- id of the edge to remove

remove_edge_property(property_name)

remove the map called property_name from the graph

remove_vertex(vid)

remove a specified vertex of the graph remove all the edges attached to it

Parameters:vid (vid) -- the id of the vertex to remove

remove_vertex_property(property_name)

remove the map called property_name from the graph

vertex_property(property_name)

return a map between vid and data for all vertices where property_name is defined

Return type:dict of {vid:data}

vertex_property_names()

iter on names of all property maps defined on vertices return iter of keys