Python实现查找匹配项作处理后再替换回去的方法

#!/usr/bin/python

# coding=GBK

importre

# 对m作适当处理后返回结果

deffun(m):

  print("in: %s"%m.group(0))

  ret=m.group(0).upper()[::-1]

  returnret

src="what [can] I do for can you[can] come on"

pat="(?<=

)(can)(?=

)"

#print(re.search(pat, src).group(1))

#result = re.sub(pat,lambda m:m.group(1).upper()[::-1], src)

# 使用lambda

result1=re.sub(pat,lambdam:m.group(0).upper()[::-1], src)

print("result1: %s\n"%result1)

# 在re.sub中使用函数

result2=re.sub(pat, fun, src)

print("result2: %s"%result2)

[zcm@python#112]$./del.py

result1: what [NAC] I doforcan you[NAC] come on

in: can

in: can

result2: what [NAC] I doforcan you[NAC] come on

[zcm@python#113]$