python - Lookahead assertion with multiple values -

i have following text:

[red]  aaa [bbb] hello  [blue]  aaa  [green]  ccc 

i want extract texts between section headers. tried lookahead assertion matches particular section header until header list of headers:

keys = ('red', 'blue', 'green') key in keys:     match = re.search(r'\[' + key + r'\](.*)(?=(?:' + '|'.join(keys) + r'|$))',                       text, flags=re.dotall)      print(key, match.group(1)) 

i'm missing though since doesn't match anything. ideas?

you can regex findall! can group section , values in like,

>>> import re >>> print re.findall(r'\[(\w*)\]([\w \n]*)',text) [('red', '\n\naaa '), ('bbb', ' hello\n\n'), ('blue', '\n\naaa\n\n'), ('green', '')] 

here section \[(\w*)\] , ([\w \n]*) contents in section. result in hand, can strip or replace redundant newlines!

hope helps!