in src/graph_community.py [0:0]
def _sort_nodes(nx_G):
"""
Relabel node index in order of 0, 1, ...., N-1
:param nx_G: networkx.classes.graph.Graph, Graph object to be sorted
"""
nodes = sorted(nx_G.nodes())
new_nodes = list(range(len(nodes)))
nodes_mapping = dict(zip(nodes, new_nodes))
return nx.relabel_nodes(nx_G, nodes_mapping)