- for tag in area.tags if tag.category in (u'theme', u'thing')])
- assert themes == {(u'theme', u'nieporządek'), (u'thing', u'Kosmos')}, \
+ for tag in area.tags if tag.category in ('theme', 'thing')])
+ assert themes == {('theme', 'nieporządek'), ('thing', 'Kosmos')}, \