Python Regexp：在包含OR和AND的查询字符串中查找所有单词/词组

Question

I have a querystring like this:

s = 'word1 AND word2 word3 OR "word4 word5" OR word6 AND word7 word8'

I need to find all words or phrases within OR and AND, so the results will be a list like this (preferably without the spaces between AND/OR and the word/phrase):

l = ['word1', 'word2 word3', '"word4 word5"', 'word6', 'word7 word8']

I've tried messing around with regular expressions but could't find a way to do this.

Thanks for the help.

Answer 1

If you want to use regexps, re.split should do it:

re.split(' OR | AND ', 'word1 AND word2 word3 OR "word4 word5" OR word6 AND word7 word8')
['word1', 'word2 word3', '"word4 word5"', 'word6', 'word7 word8']

If you need a bigger hammer, you could check out something like pyparsing: http://pyparsing.wikispaces.com/file/view/searchparser.py

Answer 2

IMO you should instead use

s.split(' AND ') 
s.split(' OR ')

or if the spacing is irregular, use

s.split('AND') 
s.split('OR')

then loop and .strip() each element