old_contents: import os
  import time
  from string import Template
  
  path = os.path.dirname(os.path.abspath(__file__))
  
  def create_network(data):
  
      import codecs
      import networkx as nx
      from networkx.readwrite import json_graph
  
      G = nx.DiGraph()
  
      for node in data:
          G.add_node( encode_utf8( node['creator'] ) )
  
          if '_comments' in node:
              for comment in node['_comments']:
                  G.add_edge( encode_utf8( comment['from']['name'] ), encode_utf8( node['creator'] ) )
  
      d = json_graph.node_link_data(G)
  
      graph_div_id = int( time.time() * 1000 )
  
      html_template = Template( codecs.open( path + '/network.html', 'r').read() )
  
      js_template_type = 'svg' if len(d['nodes']) < 500 else 'canvas'
      js_template = Template( codecs.open( path + '/network_' + js_template_type +'.js', 'r').read() )
  
      css_text = codecs.open( path + '/network.css', 'r').read()
  
      js_text = js_template.substitute( {'graph_div_id' : graph_div_id,
                                         'nodes' : d['nodes'],
                                         'links' : d['links']} )
  
      return html_template.substitute( {'graph_div_id': 'network_graph_' + str(graph_div_id),
                                        'css': css_text,
                                        'js': js_text} )
  
  def encode_utf8( string ):
      try:
          return string.encode('utf8')
      except UnicodeDecodeError:
          return string
  
new_contents: import os
  import time
  from string import Template
  
  path = os.path.dirname(os.path.abspath(__file__))
  
  def create_network(data):
  
      import codecs
      import networkx as nx
      from networkx.readwrite import json_graph
  
      G = nx.DiGraph()
  
      for node in data:
          G.add_node( encode_utf8( node['creator'] ) )
  
          if '_comments' in node:
              for comment in node['_comments']:
                  G.add_edge( encode_utf8( comment['from']['name'] ), encode_utf8( node['creator'] ) )
  
      d = json_graph.node_link_data(G)
  
      if not d['nodes']: return "Dataset empty."
  
      graph_div_id = int( time.time() * 1000 )
  
      html_template = Template( codecs.open( path + '/network.html', 'r').read() )
  
      js_template_type = 'svg' if len(d['nodes']) < 500 else 'canvas'
      js_template = Template( codecs.open( path + '/network_' + js_template_type +'.js', 'r').read() )
  
      css_text = codecs.open( path + '/network.css', 'r').read()
  
      js_text = js_template.substitute( {'graph_div_id' : graph_div_id,
                                         'nodes' : d['nodes'],
                                         'links' : d['links']} )
  
      return html_template.substitute( {'graph_div_id': 'network_graph_' + str(graph_div_id),
                                        'css': css_text,
                                        'js': js_text} )
  
  def encode_utf8( string ):
      try:
          return string.encode('utf8')
      except UnicodeDecodeError:
          return string
  
subject: Check if dataset empty.