Python根据阿拉伯数字生成中文汉字数字的完整教程

def num_to_plain_chinese(n: int) -> str:
    """
    阿拉伯数字 1~100 转为纯中文数字
    :param n: 输入整数 1 - 100
    :return: 纯中文数字字符串
    """
    if not isinstance(n, int):
        raise TypeError("输入必须为整数")
    if n < 1 or n > 100:
        raise ValueError("当前仅支持 1 ~ 100 的数字转换")

    digits = ["", "一", "二", "三", "四", "五", "六", "七", "八", "九"]
    # 分离十位、个位
    ten_digit = n // 10
    unit_digit = n % 10

    if n == 100:
        return "一百"
    # 个位数 1-9
    if ten_digit == 0:
        return digits[unit_digit]
    # 十位数 10-19
    elif ten_digit == 1:
        if unit_digit == 0:
            return "十"
        else:
            return f"十{digits[unit_digit]}"
    # 二十~九十九
    else:
        if unit_digit == 0:
            return f"{digits[ten_digit]}十"
        else:
            return f"{digits[ten_digit]}十{digits[unit_digit]}"


# 测试用例
if __name__ == "__main__":
    test_nums = [1, 5, 10, 12, 15, 20, 36, 99, 100]
    for num in test_nums:
        print(f"{num} → {num_to_plain_chinese(num)}")

def num_to_chinese_article_title(n: int) -> str:
    """数字转 第一篇、第十篇、第十五篇 格式标题"""
    chinese_str = num_to_plain_chinese(n)
    return f"第{chinese_str}篇"


# 测试
print(num_to_chinese_article_title(1))   # 第一篇
print(num_to_chinese_article_title(15))  # 第十五篇
print(num_to_chinese_article_title(20))  # 第二十篇
print(num_to_chinese_article_title(99))  # 第九十九篇

def num_to_chinese_part_title(n: int) -> str:
    """数字转 第一部分、第十三部分 格式标题"""
    chinese_str = num_to_plain_chinese(n)
    return f"第{chinese_str}部分"

print(num_to_chinese_part_title(12))  # 第十二部分

class ChineseNumUtil:
    digits = ["", "一", "二", "三", "四", "五", "六", "七", "八", "九"]

    @classmethod
    def num_to_plain_chinese(cls, n: int) -> str:
        if not isinstance(n, int):
            raise TypeError("输入必须为整数")
        if n < 1 or n > 100:
            raise ValueError("仅支持 1 ~ 100")
        ten = n // 10
        unit = n % 10
        if n == 100:
            return "一百"
        if ten == 0:
            return cls.digits[unit]
        elif ten == 1:
            return "十" if unit == 0 else f"十{cls.digits[unit]}"
        else:
            return f"{cls.digits[ten]}十" if unit == 0 else f"{cls.digits[ten]}十{cls.digits[unit]}"

    @classmethod
    def num_to_chinese_article_title(cls, n: int) -> str:
        """第X篇"""
        return f"第{cls.num_to_plain_chinese(n)}篇"

    @classmethod
    def num_to_chinese_part_title(cls, n: int) -> str:
        """第X部分"""
        return f"第{cls.num_to_plain_chinese(n)}部分"


# 调用示例
if __name__ == "__main__":
    util = ChineseNumUtil
    print(util.num_to_plain_chinese(15))
    print(util.num_to_chinese_article_title(15))
    print(util.num_to_chinese_part_title(15))

def num_to_plain_chinese_extend(n: int) -> str:
    digits = ["", "一", "二", "三", "四", "五", "六", "七", "八", "九"]
    if n == 100:
        return "一百"
    if 101 <= n <= 199:
        hundred = "一百"
        rest = n - 100
        if rest == 0:
            return hundred
        return hundred + num_to_plain_chinese(rest)
    # 其余复用原有逻辑
    ten_digit = n // 10
    unit_digit = n % 10
    if ten_digit == 0:
        return digits[unit_digit]
    elif ten_digit == 1:
        return "十" if unit_digit == 0 else f"十{digits[unit_digit]}"
    else:
        return f"{digits[ten_digit]}十" if unit_digit == 0 else f"{digits[ten_digit]}十{digits[unit_digit]}"

print(num_to_plain_chinese_extend(115)) # 一百十五