old_contents: import networkx as nx
  
  
  class ConnectedComponents:
      """This is a class for connected component detection method to cluster event logs [1]_.
  
      .. [1] H. Studiawan, B. A. Pratomo, and R. Anggoro, Connected component detection for authentication log
         clustering, in Proceedings of the International Seminar on Science and Technology, 2016, pp. 495-496.
      """
      def __init__(self, g):
          """This is a constructor for ConnectedComponent class
  
          Parameters
          ----------
          g : graph
              a graph to be clustered
          """
          self.g = g
  
      def get_clusters(self):
          """This method find any connected component in a graph.
  
          A component represents a cluster and each component will be given a cluster identifier.
  
          Returns
          -------
          clusters : list[list]
              List of cluster list, where each list contains index (line number) of event log.
          """
          clusters = []
          for components in nx.connected_components(self.g):
              clusters.append(components)
  
          cluster_id = 0
          for cluster in clusters:
              for node in cluster:
                  self.g.node[node]['cluster'] = cluster_id
              cluster_id += 1
  
          return clusters
new_contents: import networkx as nx
  
  
  class ConnectedComponents:
      """This is a class for connected component detection method to cluster event logs [1]_.
  
      .. [1] H. Studiawan, B. A. Pratomo, and R. Anggoro, Connected component detection for authentication log
         clustering, in Proceedings of the International Seminar on Science and Technology, 2016, pp. 495-496.
      """
      def __init__(self, g):
          """This is a constructor for ConnectedComponent class
  
          Parameters
          ----------
          g : graph
              a graph to be clustered
          """
          self.g = g
  
      def get_clusters(self):
          """This method find any connected component in a graph.
  
          A component represents a cluster and each component will be given a cluster identifier.
  
          Returns
          -------
          clusters : list[list]
              List of cluster list, where each list contains index (line number) of event log.
          """
          clusters = []
          for components in nx.connected_components(self.g):
              clusters.append(components)
  
          cluster_id = 0
          for cluster in clusters:
              for node in cluster:
                  self.g.node[node]['cluster'] = cluster_id
              cluster_id += 1
  
          return clusters
  
subject: Add new line in the end of the file