/Python/Python - retrieve unconnected node pairs

Python - retrieve unconnected node pairs

nodelist = list(G0.nodes(data=True))                        # From G to list
vertex = [a for a, b in nodelist]                           # Get attribute vertex
node_df = pd.DataFrame({'vertex': vertex})                  # Get DF with vertex
node_list = node_df["vertex"].tolist()                      # From df to list

node_list = list(dict.fromkeys(node_list))                  # Remove duplicate items from the list
adj_G = nx.to_numpy_matrix(G0, nodelist = node_list)        # Build adjacency matrix


all_unconnected_pairs = []                                                  
offset = 0                                                                  
for i in tqdm(range(adj_G.shape[0])):                                       # Take only above diagonal of the adjacency matrix                                         
  for j in range(offset, adj_G.shape[1]):
    if i != j:
        # if G0[node_list[i], node_list[j]]['weight'] <=2:                  # Take only edges with weight 1 or 2
            if adj_G[i,j] ==0:                                              # Take only unconnected node pairs                                     
                all_unconnected_pairs.append([node_list[i], node_list[j]])

  offset = offset + 1

len(all_unconnected_pairs)

Source: stackoverflow.com

Similar codes

34 votes130 views3 answers
How to run bash script in python
Python
2 votes135 views3 answers
How to set default python version linux
Python
7 votes123 views2 answers
Python deepcopy
Python
24 votes136 views6 answers
Merge two columns pandas
Python
2 votes124 views1 answer
Python pandas apply to one column
Python
0 vote124 views1 answer
Np.random.randint to generate -1 +1
Python
3 votes117 views1 answer
Multiple linear regression in python
Python
0 vote118 views1 answer
Custom-field-list_display
Python
5 votes165 views3 answers
Sys module in python
Python
0 vote137 views1 answer
Km/h to mph python
Python