How to name each subgraph ?

I have this graph and I want to name each subgraph

<pre lang="Python"> <pre>import matplotlib.pyplot as plt
    import networkx as nx
    G = nx.from_numpy_array(x)  #x matrix
    #G.add_nodes_from(new_list)
    lab= dict(zip(G.nodes, new_list)) #pour nommée les noeuds
    threshold = 0.2

# filter out all edges above threshold and grab id's
    long_edges = list(filter(lambda e: e[2] <= threshold, (e for e in G.edges.data('weight'))))
    le_ids = list(e[:2] for e in long_edges)

# remove filtered edges from graph G
    G.remove_edges_from(le_ids)
    nx.draw(G,node_size=500,arrowsize=200,node_color='green', edge_color='red',font_size=10, labels=lab,
            with_labels=True)
    plt.show(300)
    print("number of edges is:",G.number_of_edges())
    print("number of nodes is:",G.number_of_nodes())
    print("lengh of the graphe is :",len(G))
    components = []
    for graph in nx.connected_components(G):
        components.append([graph, len(graph)]) 
    print("the components:",components) 
    print(nx.info(G))