twittify: django template filter to replace metions (@'s) and hashtags (#'s) with links to twitter

twittify.py

@register.filter(name='twittify')
def twittify(value):
	""" Replace @ and #'s with links to twitter"""
	return mark_safe(
		re.sub(r"#(?P<ht>([a-zA-Z0-9_])+)", r"#<a href='http://twitter.com/#!/search?q=\g<ht>' target='_blank'>\g<ht></a>", 
		re.sub(r"@(?P<un>([a-zA-Z0-9_]){1,15})", r"@<a href='http://twitter.com/\g<un>' target='_blank'>\g<un></a>", value))
		)
twittify.mark_safe=True