code: def main(unusedargv):
      
      del unusedargv
  
      bt_table = (bigtable
                  .Client(FLAGS.cbt_project, admin=True)
                  .instance(FLAGS.cbt_instance)
                  .table(FLAGS.cbt_table))
      assert bt_table.exists(), "Table doesn't exist"
  
      # Get current game counter, updates are conditioned on this matching.
      last_game = latest_game_number(bt_table)
      print("eval_game_counter:", last_game)
      print()
  
      # Get existing SGF paths so we avoid uploading duplicates
      existing_paths = read_existing_paths(bt_table)
      print("Found {} existing".format(len(existing_paths)))
      if existing_paths:
          duplicates = Counter(existing_paths)
          existing_paths = set(existing_paths)
  
          for k, v in duplicates.most_common():
              if v == 1:
                  break
              print("{}x{}".format(v, k))
  
          print("\tmin:", min(existing_paths))
          print("\tmax:", max(existing_paths))
          print()
  
      # Get all SGFs that match glob, skipping SGFs with existing records.
      data = read_games(FLAGS.sgf_glob, existing_paths)
      if data:
          write_eval_records(bt_table, data, last_game)
docs: All of the magic together.