Python實(shí)現(xiàn)中文大寫金額轉(zhuǎn)阿拉伯?dāng)?shù)字

更新時(shí)間：2025年08月21日 15:46:19 作者：幸福清風(fēng)

在財(cái)務(wù)票據(jù)中,中文大寫金額被廣泛使用以防止篡改,但在數(shù)據(jù)處理時(shí),我們需要將其轉(zhuǎn)換為阿拉伯?dāng)?shù)字形式,下面我們就來看看如何使用Python實(shí)現(xiàn)這一轉(zhuǎn)換吧

在財(cái)務(wù)票據(jù)中，中文大寫金額（如“貳拾捌萬壹仟柒佰伍拾伍元壹角玖分”）被廣泛使用以防止篡改。但在數(shù)據(jù)處理時(shí)，我們需要將其轉(zhuǎn)換為阿拉伯?dāng)?shù)字形式。本文將帶你一步步解析如何用Python實(shí)現(xiàn)這一轉(zhuǎn)換。

一、核心思路拆解

整個(gè)轉(zhuǎn)換過程可分為三步：

中文數(shù)字解析：將“貳拾捌”等字符串轉(zhuǎn)換為數(shù)字
單位分割：處理“億”、“萬”等大單位分隔
元角分處理：分離并轉(zhuǎn)換金額中的整數(shù)與小數(shù)部分

二、中文數(shù)字解析實(shí)現(xiàn)

def chinese_to_number(chinese_str):
    result = 0
    temp = 0
    unit = 1
    for char in chinese_str:
        if char in chinese_to_arabic:
            temp += chinese_to_arabic[char] * unit
            if unit < 10: 
                unit = 1  # 重置單位為個(gè)位
        elif char in unit_map:
            unit = unit_map[char]
            temp = 1 if temp == 0 else temp  # 處理"拾"等單位前無數(shù)字的情況
            result += temp * unit
            temp = 0
            unit = 1
    return result + temp

解析邏輯：

遍歷每個(gè)字符，遇到數(shù)字字符（壹、貳等）時(shí)累加到臨時(shí)變量
遇到單位字符（拾、佰等）時(shí)，將當(dāng)前累加值乘以單位后加入結(jié)果
特殊處理連續(xù)單位（如"拾萬"自動(dòng)補(bǔ)1）

三、大單位分割策略

def extract_parts_yi_wan(s):
    result = {"億": "", "萬": "", "一": ""}
    if "億" in s:
        yi_index = s.index("億")
        result["億"] = s[:yi_index]
        after_yi = s[yi_index+1:]
        if "萬" in after_yi:
            wan_index = after_yi.index("萬")
            result["萬"] = after_yi[:wan_index]
            result["一"] = after_yi[wan_index+1:]
        else:
            result["一"] = after_yi
    elif "萬" in s:
        wan_index = s.index("萬")
        result["萬"] = s[:wan_index]
        result["一"] = s[wan_index+1:]
    else:
        result["一"] = s
    return result

分割規(guī)則：

優(yōu)先分割"億"級單位
在億級后的部分繼續(xù)分割"萬"級
剩余部分作為個(gè)位部分處理

例如："貳億叁仟萬肆仟伍佰"會(huì)被分割為：

億："貳"
萬："叁仟"
一："肆仟伍佰"

四、元角分綜合處理

def convert_amounts(amount_list):
    pattern = re.compile(
        r'([零壹貳叁肆伍陸柒捌玖拾佰仟萬億]+)元?'
        r'((?:零|[壹貳叁肆伍陸柒捌玖]+)角)?'
        r'((?:零|[壹貳叁肆伍陸柒捌玖]+)分)?'
    )
    converted = []
    for amount in amount_list:
        match = pattern.findall(amount)
        if not match:
            converted.append("無法轉(zhuǎn)換")
            continue
            
        yuan, jiao, fen = match[0]
        parts = extract_parts_yi_wan(yuan)
        total = 0
        
        # 處理億、萬、個(gè)位部分
        for unit, value in parts.items():
            if not value:
                continue
            num = chinese_to_number(value)
            if unit == "億":
                num *= 100000000
            elif unit == "萬":
                num *= 10000
            total += num
        
        # 處理角分
        if jiao and jiao != '零角':
            total += chinese_to_arabic[jiao[:-1]] * 0.1
        if fen and fen != '零分':
            total += chinese_to_arabic[fen[:-1]] * 0.01
        
        converted.append(f"{total:.2f}")
    return converted

處理流程：

正則提取元、角、分三部分
分別解析各部分?jǐn)?shù)值
按單位權(quán)重累加計(jì)算總金額
保留兩位小數(shù)輸出

五、測試驗(yàn)證

amounts = [
    '貳拾捌萬壹仟柒佰伍拾伍元壹角玖分',
    '貳拾伍萬捌仟肆佰玖拾壹元'
]
print(convert_amounts(amounts))

輸出結(jié)果：

['281755.19', '258491.00']

六、全部代碼

import re

# 定義中文數(shù)字到阿拉伯?dāng)?shù)字的映射
chinese_to_arabic = {
    '零': 0, '壹': 1, '貳': 2, '叁': 3, '肆': 4,
    '伍': 5, '陸': 6, '柒': 7, '捌': 8, '玖': 9,
}

unit_map = {'拾': 10, '佰': 100, '仟': 1000}


def chinese_to_number(chinese_str):
    result = 0
    temp_result = 0
    unit = 1
    for char in chinese_str:
        if char in chinese_to_arabic:
            temp_result += chinese_to_arabic[char] * unit
            if unit < 10:  # 當(dāng)前處理的是個(gè)位數(shù)，需要重置unit
                unit = 1
        elif char in unit_map:
            unit = unit_map[char]
            temp_result = 1 if temp_result == 0 else temp_result
            result += temp_result * unit
            temp_result = 0
            unit = 1
        elif char in ['元', '角', '分']:
            break
    result += temp_result
    return result


def extract_parts_yi_wan(s):
    # 初始化結(jié)果字典
    result = {"億": "", "萬": "", "一": ""}

    # 檢查字符串是否包含“億”
    if "億" in s:
        yi_index = s.index("億")
        result["億"] = s[:yi_index]

        # 檢查億后面的部分是否包含“萬”
        after_yi = s[yi_index + 1:]
        if "萬" in after_yi:
            wan_index = after_yi.index("萬")
            result["萬"] = after_yi[:wan_index]
            result["一"] = after_yi[wan_index + 1:]
        else:
            # 如果沒有“萬”，則億與萬中間的字符串為空，萬后面的字符串為億后面的所有內(nèi)容
            result["萬"] = ""
            result["一"] = after_yi
    else:
        # 如果沒有“億”，檢查是否包含“萬”
        if "萬" in s:
            wan_index = s.index("萬")
            result["一"] = s[wan_index + 1:]
            result["萬"] = s[:wan_index]
        else:
            # 如果沒有“萬”，則萬后面的字符串為空，億前面的字符串為整個(gè)字符串
            result["一"] = s
            result["萬"] = ""

    return result


def convert_amounts(amount_list):
    pattern = re.compile(
        r'([壹貳叁肆伍陸柒捌玖零拾佰仟萬億]+)元?((?:零|[壹貳叁肆伍陸柒捌玖]+)角)?((?:零|[壹貳叁肆伍陸柒捌玖]+)分)?')

    converted_list = []
    for amount in amount_list:
        number = 0
        match = pattern.findall(amount)
        if match:
            yuan, jiao, fen = match[0]
            ret_yuan = extract_parts_yi_wan(yuan)
            for k, v in ret_yuan.items():
                new_number = 0
                if v:
                    new_number = chinese_to_number(v)
                    if k == "億":
                        new_number *= 100000000
                    elif k == "萬":
                        new_number *= 10000
                number += new_number

            if jiao and jiao != '零角':
                number += chinese_to_arabic[jiao.replace('角', '')] * 0.1
            if fen and fen != '零分':
                number += chinese_to_arabic[fen.replace('分', '')] * 0.01

            converted_list.append(f"{number:.2f}")
        else:
            converted_list.append("無法轉(zhuǎn)換")
    return converted_list


amounts = ['貳拾捌萬壹仟柒佰伍拾伍元壹角玖分', '貳拾伍萬捌仟肆佰玖拾壹元']
converted_amounts = convert_amounts(amounts)
print(converted_amounts)

以上就是Python實(shí)現(xiàn)中文大寫金額轉(zhuǎn)阿拉伯?dāng)?shù)字的詳細(xì)內(nèi)容，更多關(guān)于Python中文大寫轉(zhuǎn)阿拉伯?dāng)?shù)字的資料請關(guān)注腳本之家其它相關(guān)文章！

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