Multiple_replace.py

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

# -------------------------------------------------------------------------------
# FileName:    []
# Purpose:     multiple_replace
# Author:      [ZhouKe]
# Created:     2014 - -
# Copyright:   (c) ZhouKe 2014
# Licence:     <GPL>
#-------------------------------------------------------------------------------

import re


def multiple_replace(text, adict):
    rx = re.compile('|'.join(map(re.escape, adict)))

    def one_xlat(match):
        return adict[match.group(0)]

    return rx.sub(one_xlat, text)


print multiple_replace('abc123erts', {'a': 'A', 'b': 'B'})