Python开发国际象棋记谱程序时如何识别0-0、0-0-0并替换为对应表述

数据老陈

2026-10-3

解决方案

修改思路

原代码逐字符遍历的逻辑无法识别「0-0」「0-0-0」这类多字符组合的记谱，因此需要先完成全局多字符子串替换，再处理单字符映射
必须优先替换更长的0-0-0（长易位），再替换0-0（短易位），避免长易位的前半段被错误匹配为短易位
用字典存储映射规则，替代堆叠的if判断，后续维护扩展更方便

修改后代码

def say(chess_line):
    # 优先处理多字符易位规则
    chess_line = chess_line.replace("0-0-0", " Castles queenside ")
    chess_line = chess_line.replace("0-0", " Castles ")
    # 单字符映射表
    char_mapping = {
        "x": " Takes ",
        "N": " Knight ",
        "B": " Bishop ",
        "R": " Rook ",
        "Q": " Queen ",
        "K": " King "
    }
    line_of_chess = ""
    for char in chess_line:
        line_of_chess += char_mapping.get(char, char)
    # 去除首尾多余空格
    return line_of_chess.strip()