Python 用ライブラリ mahjong を利用し，与えられた手牌について，和了していれば点数を計算し，さもなければ向聴数を計算する．鳴きには対応させていない（ライブラリ自体には機能が備わっている）．

agari_analyzer.py

#!/usr/bin/env python3


# Hamukichi (Nombiri), MIT License


from mahjong import agari, constants, shanten, tile
from mahjong.hand_calculating import hand, hand_config
import fire
import copy


OPT_RULES = hand_config.OptionalRules(has_open_tanyao=True)
WIND_STR2CONST = {"EAST": constants.EAST,
                  "SOUTH": constants.SOUTH,
                  "WEST": constants.WEST,
                  "NORTH": constants.NORTH}
WIND_STR2CHARA = {"EAST": "東",
                  "SOUTH": "南",
                  "WEST": "西",
                  "NORTH": "北"}

def __analyze(all_tiles, win_tile, player_wind, round_wind, **hand_confs):
    all_tiles_136 = tile.TilesConverter.one_line_string_to_136_array(all_tiles)
    all_tiles_34 = tile.TilesConverter.one_line_string_to_34_array(all_tiles)
    win_tile_136 = tile.TilesConverter.one_line_string_to_136_array(win_tile)[0]
    player_wind = player_wind.upper()
    round_wind = round_wind.upper()
    player_wind_136 = WIND_STR2CONST[player_wind]
    round_wind_136 = WIND_STR2CONST[round_wind]
    all_hand_confs = copy.copy(hand_confs)
    all_hand_confs["player_wind"] = player_wind_136
    all_hand_confs["round_wind"] = round_wind_136
    config = hand_config.HandConfig(options=OPT_RULES, **all_hand_confs)
    sh_obj = shanten.Shanten()
    sh_res = sh_obj.calculate_shanten(all_tiles_34)
    ag = agari.Agari()
    if not ag.is_agari(all_tiles_34):
        return (sh_res, None)
    else:
        calc = hand.HandCalculator()
        hand_res = calc.estimate_hand_value(tiles=all_tiles_136,
                                            win_tile=win_tile_136,
                                            config=config)
        wind = "{}場{}".format(WIND_STR2CHARA[round_wind], WIND_STR2CHARA[player_wind])
        han_fu = "{} 飜 {} 符".format(hand_res.han, hand_res.fu)
        if hand_res.han <= 5:
            basic_score = hand_res.fu * 2 ** (hand_res.han + 2)
            if basic_score > 2000:
                gan = "満貫"
            else:
                gan = ""
        elif hand_res.han <= 7:
            gan = "跳満"
        elif hand_res.han <= 10:
            gan = "倍満"
        elif hand_res.han <= 12:
            gan = "三倍満"
        else:
            n = hand_res.han // 13
            if n == 1:
                gan = "役満"
            else:
                gan = "{} 倍役満".format(n)

        is_tsumo = hand_confs.get("is_tsumo", False)
        is_dealer = player_wind == "EAST"
        if hand_res.han < 1:
            all_cost = "1 飜縛りを満たしていません"
        elif is_tsumo:
            if is_dealer:
                all_cost = "{} 点 オール".format(hand_res.cost["additional"])
            else:
                all_cost = "{} 点 / {} 点".format(hand_res.cost["additional"],
                                                 hand_res.cost["main"])
        else:
            all_cost = "{} 点".format(hand_res.cost["main"])
        hand_report = {"hand_res": hand_res, "wind": wind,
                       "han_fu": han_fu, "gan": gan, "all_cost": all_cost, "yakus": hand_res.yaku}
        return (sh_res, hand_report)


def analyze(all_tiles, win_tile, player_wind="SOUTH", round_wind="EAST", **hand_confs):
    analyze_res = __analyze(all_tiles, win_tile, player_wind, round_wind, **hand_confs)
    sh_res, hand_report = analyze_res
    if hand_report is None:
        if sh_res != 0:
            print("{} 向聴".format(sh_res))
        else:
            print("聴牌")
    else:
        print(hand_report["wind"])
        print(hand_report["han_fu"], end=" ")
        print(hand_report["gan"])
        print(hand_report["all_cost"])
        if hand_report["yakus"] is not None:
            for yaku in hand_report["yakus"]:
                print(yaku.japanese)


def main():
    fire.Fire(analyze)


if __name__ == '__main__':
    main()