python在文本中的两点之间替换单词

Question

In the last few days I am dealing with regular expressions. So, let's say that I have a text

text = '
1. sometext sometext sometext given as follows:
«book one
title here
part one
1. mpla mpla mpla
2. some text some text «here spesific text»
book two 
1. some text some text.
2. «also» try this in case of emergency.»

book three
part three
directions to home'

and I am trying to find all books between '«' and '»'. change it with the word 'chapter' and get the text back. By using regular expression I can't get the result that I want because as far as I can understand regex isn't the best solution for counting how many '»' we have passed so far.

For example If I use

print re.findall(r'«([book\s\S+]*?)»', data, re.DOTALL)

I only get the text until the first '»'. Is there a way to get book one and book two?

I also tried this:

print re.findall(r'(?<=«)(?=(book\s\S+))|(?=[^«]*»)(?=(book\s\S+))',data, re.DOTALL)

but neither works. Is there a way to get the result or should I use other than regular expressions?

Answer 1

One solution is to do this in two parts as follows:

print re.findall(r"(book\s\S+)", re.search("«(.*)»", text, re.S).group(1), re.S)

This first finds the outer « » and then searches inside this for the books.

This gives the following output:

['book one', 'book two']