[英]Add confirmation to search and replace using regex in Python
I have a small python script that loops through a bunch of files and in each file apply a few regex. 我有一个小的python脚本循环遍历一堆文件,并在每个文件中应用一些正则表达式。 I would like to add a confirmation step in which the old and the new text are shown.
我想添加一个确认步骤,其中显示旧文本和新文本。 Is there any efficient way of doing this.
有没有有效的方法来做到这一点。 Right now, in a string, I am doing a
.search
., then a .sub
within the matched text and the if the user confirms I insert the new text in the original string (by indices). 现在,在一个字符串中,我正在做一个
.search
。,然后是匹配文本中的.sub
,如果用户确认我在原始字符串中插入新文本(通过索引)。
You could use re.sub with a callback that ask the user's confirmation: 你可以使用带有回调的re.sub来询问用户的确认:
http://docs.python.org/2/library/re.html#text-munging http://docs.python.org/2/library/re.html#text-munging
text = 'This is a dummy dummy text'
def callback(m):
string = m.group()
subst = string.upper()
start = m.start()
question = 'subst {:s} at pos {:d}:'.format(string, start)
ans = raw_input(question)
if ans[0] in 'Yy':
return subst
else:
return string
print re.sub(r'\bdummy\b', callback, text)
which print 哪个印刷品
subst dummy at pos 10:n
subst dummy at pos 16:y
This is a dummy DUMMY text
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