def __init__(self, name, graph_type):
"""Create a Graph instance
:type name: str
:type graph_type: str
:rtype: Graph
"""
self.name = name
self.graph_type = graph_type
self.root_id = None
self.notifier = Notifier()
def __init__(self, name, graph_type, vertices=None, edges=None):
"""Create a Graph instance
:type name: str
:type graph_type: str
:type vertices: list of Vertex
:type edges: list of Edge
:rtype: Graph
"""
self.name = name
self.graph_type = graph_type
self.notifier = Notifier()