Python字符串替换实例分析

单个字符替换

s = 'abcd'
a = ["a", "b", "c"]
b = ["c", "d", "e"]
import string
s.translate(string.maketrans(''.join(a),''.join(b)))
print s

输出结果为：abcd

字符串替换，改善版

s = "hello, i'm mouren, hehe~~,hehe~~mourenmouren"
a = ["mouren", "hehe"]
b = ["mr", "hoho"]
import re
dic = dict(zip(a,b))
pattern = re.compile('(' + '|'.join(a) + ')')
s = pattern.sub(lambda a:dic[a.group()], s)
print s

输出结果为：hello, i'm mr, hoho~~,hoho~~mrmr

希望本文所述对大家的Python程序设计有所帮助。