old_contents: 
  import json
  from IPython.display import display, HTML, Javascript
  
  
  JS_SAVE = [
      'https://cdnjs.cloudflare.com/ajax/libs/require.js/2.1.17/require.js',
      'https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js',
  ]
  
  JS_LIBS_ONE = json.dumps([
      'jquery',
      'https://code.highcharts.com/stock/highstock.js',
      'https://d3js.org/d3.v3.min.js',
  ])
  
  JS_LIBS_ONE_sep = ';'.join(map(lambda x: 'console.log("'+x+'")', json.loads(JS_LIBS_ONE)))+';'
  
  
  JS_LIBS_TWO = json.dumps([
      'https://cdn.datatables.net/1.10.10/js/jquery.dataTables.min.js',
      'https://code.highcharts.com/stock/highcharts-more.js',
      'https://code.highcharts.com/modules/drilldown.js',
      'https://code.highcharts.com/modules/exporting.js',
      'https://code.highcharts.com/modules/heatmap.js',
      'https://code.highcharts.com/modules/treemap.js',
      'https://highcharts.github.io/export-csv/export-csv.js',
  ])
  
  JS_LIBS_TWO_sep = ';'.join(map(lambda x: 'console.log("'+x+'")', json.loads(JS_LIBS_TWO)))+';'
  
  
  
  JS_LOAD = """
  require(%s, function() {
      require(%s, function() {
          console.log("The following js libs loaded:");
          console.log("First:");
          %s
          console.log("Then:");
          %s
      });
  });""" % (JS_LIBS_ONE, JS_LIBS_TWO, JS_LIBS_ONE_sep, JS_LIBS_TWO_sep)
  
  
  def load_js_libs():
      display(Javascript(JS_LOAD))
  
  
  
  API_DIR = 'api'
  SCRIPT_DIR = 'script'
  SAMPLES_DIR = 'samples'
  
  HC_OBJECT_FILE = 'hc_object.json'
  HC_OPTION_FILE = 'hc_option.json'
  
  HS_OBJECT_FILE = 'hs_object.json'
  HS_OPTION_FILE = 'hs_option.json'
  
  FULLNAME = 'fullname'
  DESCRIPTION = 'description'
  DEMO = 'demo'
  
  
  
  DF_ONE_IDX_SEVERAL_COL = 'df_one_idx_several_col.csv'
  DF_ONE_IDX_SEVERAL_COL_2 = 'df_one_idx_several_col_2.csv'
  DF_ONE_IDX_ONE_COL = 'df_one_idx_one_col.csv'
  DF_ONE_IDX_TWO_COL = 'df_one_idx_two_col.csv'
  DF_TWO_IDX_ONE_COL = 'df_two_idx_one_col.csv'
  DF_SCATTER = 'df_scatter.csv'
  DF_BUBBLE = 'df_bubble.csv'
  DF_HEATMAP = 'df_heatmap.csv'
  DF_SEVERAL_IDX_ONE_COL = 'df_several_idx_one_col.csv'
  DF_TWO_IDX_SEVERAL_COL = 'df_two_idx_several_col.csv'
  
  
new_contents: 
  import json
  from IPython.display import display, HTML, Javascript
  
  
  JS_SAVE = [
      'https://cdnjs.cloudflare.com/ajax/libs/require.js/2.1.17/require.js',
      'https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js',
  ]
  
  JS_LIBS_ONE = json.dumps([
      'jquery',
      'https://code.highcharts.com/stock/highstock.js',
      'https://d3js.org/d3.v3.min.js',
  ])
  
  JS_LIBS_ONE_sep = ';'.join(map(lambda x: 'console.log("'+x+'")', json.loads(JS_LIBS_ONE)))+';'
  
  
  JS_LIBS_TWO = json.dumps([
      'https://cdn.datatables.net/1.10.10/js/jquery.dataTables.min.js',
      'https://code.highcharts.com/stock/highcharts-more.js',
      'https://code.highcharts.com/modules/drilldown.js',
      'https://code.highcharts.com/modules/exporting.js',
      'https://code.highcharts.com/modules/heatmap.js',
      'https://code.highcharts.com/modules/treemap.js',
      'https://code.highcharts.com/modules/sunburst.js',
      'https://highcharts.github.io/export-csv/export-csv.js',
  ])
  
  JS_LIBS_TWO_sep = ';'.join(map(lambda x: 'console.log("'+x+'")', json.loads(JS_LIBS_TWO)))+';'
  
  
  
  JS_LOAD = """
  require(%s, function() {
      require(%s, function() {
          console.log("The following js libs loaded:");
          console.log("First:");
          %s
          console.log("Then:");
          %s
      });
  });""" % (JS_LIBS_ONE, JS_LIBS_TWO, JS_LIBS_ONE_sep, JS_LIBS_TWO_sep)
  
  
  def load_js_libs():
      display(Javascript(JS_LOAD))
  
  
  
  API_DIR = 'api'
  SCRIPT_DIR = 'script'
  SAMPLES_DIR = 'samples'
  
  HC_OBJECT_FILE = 'hc_object.json'
  HC_OPTION_FILE = 'hc_option.json'
  
  HS_OBJECT_FILE = 'hs_object.json'
  HS_OPTION_FILE = 'hs_option.json'
  
  FULLNAME = 'fullname'
  DESCRIPTION = 'description'
  DEMO = 'demo'
  
  
  
  DF_ONE_IDX_SEVERAL_COL = 'df_one_idx_several_col.csv'
  DF_ONE_IDX_SEVERAL_COL_2 = 'df_one_idx_several_col_2.csv'
  DF_ONE_IDX_ONE_COL = 'df_one_idx_one_col.csv'
  DF_ONE_IDX_TWO_COL = 'df_one_idx_two_col.csv'
  DF_TWO_IDX_ONE_COL = 'df_two_idx_one_col.csv'
  DF_SCATTER = 'df_scatter.csv'
  DF_BUBBLE = 'df_bubble.csv'
  DF_HEATMAP = 'df_heatmap.csv'
  DF_SEVERAL_IDX_ONE_COL = 'df_several_idx_one_col.csv'
  DF_SEVERAL_IDX_ONE_COL_2 = 'df_several_idx_one_col_2.csv'
  DF_TWO_IDX_SEVERAL_COL = 'df_two_idx_several_col.csv'
  
  
subject: Add sunburst lib