Python 3.5.2 Error

[SmithSamuelM]

SyntaxError: invalid syntax
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python3.5/site-packages/circusweb/circushttpd.py", line 25, in
import tornadio2
File "/usr/local/lib/python3.5/site-packages/tornadio2/init.py", line 25, in
from tornadio2.router import TornadioRouter
File "/usr/local/lib/python3.5/site-packages/tornadio2/router.py", line 27, in
from tornadio2 import persistent, polling, sessioncontainer, session, proto, preflight, stats
File "/usr/local/lib/python3.5/site-packages/tornadio2/persistent.py", line 143
except Exception, ex: