def _main():
try:
_setup_logging()
command_line_arguments = _parse_command_line_arguments()
cell_values = PuzzleParser.read_from_file(
command_line_arguments.input_file)
search_summary = SearchEngine.find_solution(
cell_values, command_line_arguments.algorithm,
command_line_arguments.timeout_sec)
_print_search_summary(search_summary)
if command_line_arguments.output_file is not None:
GridFormatter.write_to_file(search_summary.final_grid,
command_line_arguments.output_file)
except InvalidInputError as e:
print("Failed to parse the input file {0}: {1}".format(
command_line_arguments.input_file, e))
except (InvalidPuzzleError, NoSuchAlgorithmError) as e:
print("Puzzle rejected by the search engine: {0}".format(e))
except (FileNotFoundError, IsADirectoryError, PermissionError) as e:
print("I/O error: {0}".format(e))
except (ValueError, RuntimeError) as e:
print("Unexpected error has occured: {0}".format(e))
finally:
print()
def find_solution(puzzle, algorithm, timeout_sec = 10):
cell_values = PuzzleParser.read_from_string(puzzle)
search_summary = SearchEngine.find_solution(cell_values, algorithm, timeout_sec)
formatted_final_grid = GridFormatter.write_to_string(search_summary.final_grid)
return (search_summary, formatted_final_grid)
