All the categories can be found in entry.tag
but will not include the type
to identify the symbol
category you are looking for. If that is something you want adding that is simple.
for entry in feed.entries:
# ...
e = [t.get('term') for t in entry.tags]
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…