hashtag regex in python

hashtag.py

import re

# the first group is noncapturing and just ensures we're at the beginning of 
# the string or have whitespace before the hashtag (don't want to capture anchors)
# without the fullwidth hashmark, hashtags in asian languages would be tough

hashtag_re = re.compile("(?:^|\s)[＃#]{1}(\w+)", re.UNICODE)

mention.py

import re

# similar to hashtag.py this regex finds username mentions, with a very permissive 
# algorithm, suitable for MediaWiki/Wikipedia usernames, which can include 
# unicode symbols and punctuation (almost anything but whitespace and a 
# few punctuation marks)

mention_re = re.compile("(?:^|\s)[＠ @]{1}([^\s#<>[\]|{}]+)", re.UNICODE)

I tried but it did not work?

@madogan well, if there are spaces between the # and the next word those aren't really hashtags.