old_contents: from networkx.algorithms.centrality.betweenness import *
  from networkx.algorithms.centrality.betweenness_subset import *
  from networkx.algorithms.centrality.closeness import *
  from networkx.algorithms.centrality.current_flow_closeness import *
  from networkx.algorithms.centrality.current_flow_betweenness import *
  from networkx.algorithms.centrality.current_flow_betweenness_subset import *
  from networkx.algorithms.centrality.degree_alg import *
  from networkx.algorithms.centrality.eigenvector import *
  from networkx.algorithms.centrality.load import *
  from networkx.algorithms.centrality.communicability_alg import *
  import networkx.algorithms.centrality.betweenness
  import networkx.algorithms.centrality.closeness
  import networkx.algorithms.centrality.current_flow_betweenness
  import networkx.algorithms.centrality.current_flow_closeness
  import networkx.algorithms.centrality.degree_alg
  import networkx.algorithms.centrality.eigenvector
  import networkx.algorithms.centrality.load
  import networkx.algorithms.centrality.communicability_alg
  
  
new_contents: from networkx.algorithms.centrality.betweenness import *
  from networkx.algorithms.centrality.betweenness_subset import *
  from networkx.algorithms.centrality.closeness import *
  from networkx.algorithms.centrality.current_flow_closeness import *
  from networkx.algorithms.centrality.current_flow_betweenness import *
  from networkx.algorithms.centrality.degree_alg import *
  from networkx.algorithms.centrality.eigenvector import *
  from networkx.algorithms.centrality.load import *
  from networkx.algorithms.centrality.communicability_alg import *
  import networkx.algorithms.centrality.betweenness
  import networkx.algorithms.centrality.closeness
  import networkx.algorithms.centrality.current_flow_betweenness
  import networkx.algorithms.centrality.current_flow_closeness
  import networkx.algorithms.centrality.degree_alg
  import networkx.algorithms.centrality.eigenvector
  import networkx.algorithms.centrality.load
  import networkx.algorithms.centrality.communicability_alg
  
  
subject: Remove import. Addresses #636