python中汉字转数字

#!/usr/bin/env python
# -*- coding: utf-8 -*-

common_used_numerals_tmp ={'零':0, '一':1, '二':2, '三':3, '四':4, '五':5, '六':6, '日':7, '八':8, '九':9, '十':10}
common_used_numerals = {}
for key in common_used_numerals_tmp:
  common_used_numerals[key.decode('utf8')] = common_used_numerals_tmp[key]
def chinese2digits(uchars_chinese):
  total = 0
  r = 1
  for i in range(len(uchars_chinese) - 1, -1, -1):
    val = common_used_numerals.get(uchars_chinese[i])
    if val >= 10 and i == 0:  #应对 十三 十四 十*之类
      if val > r:
        r = val
        total = total + val
      else:
        r = r * val
        #total =total + r * x
    elif val >= 10:
      if val > r:
        r = val
      else:
        r = r * val
    else:
      total = total + r * val
  return total