Convert Arabic numerals to Chinese numerals

arabic2chinese.py

CHINESE_MAP = {'1': '一', '2': '二', '3': '三', '4': '四', '5': '五', '6': '六', '7': '七', '8': '八', '9': '九'}
CHINESE_DIGITS = ('十', '百', '千', '万', '十万', '百万', '千万', '億', '十億', '百億', '千億', '兆', '十兆', '百兆', '千兆')

def arabic2chinese(arabic):
    chinese = []
    if len(arabic) == '0':
        return '〇'
    arabic = arabic.replace(',', '')
    for (i, num) in enumerate(arabic[::-1]):
        if num == '0':
            continue
        elif i > 0:
            chinese.append(CHINESE_DIGITS[i-1])
        chinese.append(CHINESE_MAP[num])
    return ''.join(chinese[::-1])