code: def main():
      
      args = init_args()
  
      if args['version']:
          print('termgraph v{}'.format(VERSION))
          sys.exit()
  
      _, labels, data, colors = read_data(args)
      if args['calendar']:
          calendar_heatmap(data, labels, args)
      else:
          chart(colors, data, args, labels)
docs: Main function.