new_contents: # statistics on convergence_weighted_4_node.txt
  # output into a csv file
  import re,sys, numpy as np, pandas as pd
  from pandas import Series, DataFrame
  
  def main(argv):
      author = ''
      play = ''
  
      sub = []
      
      play_subgraph=Series()
      l=''
      subgraph = ''
      subgraphs = []
      pro = 0.0
      pros = []
      
      f = open('./convergence_weighted_4_node.txt','r')
      fi = open('./convergence_weighted_4_node.csv','w')
      
      # first to get the full index of subgraphs
      for line in f:
          if '*:' in line or '-:' in line:
              continue
          l = re.split(':',line.strip())
          subgraph = l[0]
          if subgraph not in sub:
              sub.append(subgraph)
              
      df = DataFrame(index=sub)    
      f.seek(0)
      for line in f:
          if '*:' in line:
              author = line[10:12]
          elif '-:' in line:
              if play!='':
                  play_subgraph = Series(pros,index=subgraphs)
                  #play_subgraph=Series(sub_pro,index=sub,dtype=float)
                  
                  play_subgraph.name=author+':'+play
                  play_subgraph.index.name='probability'
                 
                  df[play_subgraph.name]=play_subgraph
                  
                  #if author=='Sh':
                  #    print 'play_subgraph.name = '+play_subgraph.name
                  #    print play_subgraph
                  #    print 'df'
                  #    print df[play_subgraph.name]
              play = re.split('-',line)[6]
              subgraphs = []
              pros = []
          else:
              l = re.split(':',line.strip())
              subgraph = l[0]
              pro = float(l[-1])
              subgraphs.append(subgraph)
              pros.append(pro)
              
              #sub_pro[subgraph] = pro
  
      print 'sub has '+str(len(sub))+' lines.'
      #df.fillna(0)
      #print df
      df.to_csv(fi)
      #print sub
      
  if __name__ == '__main__':
      main(sys.argv)
  
subject: Create weighted_4_node_subgraph.py