code: def choice(self, board: Union[chess.Board, int], *, minimum_weight: int = 1, exclude_moves: Container[chess.Move] = (), random=random) -> Entry:
          
          chosen_entry = None
  
          for i, entry in enumerate(self.find_all(board, minimum_weight=minimum_weight, exclude_moves=exclude_moves)):
              if chosen_entry is None or random.randint(0, i) == i:
                  chosen_entry = entry
  
          if chosen_entry is None:
              raise IndexError()
  
          return chosen_entry
docs: Uniformly selects a random entry for the given position.
  
          :raises: :exc:`IndexError` if no entries are found.