In python3, sys.maxint changed to sys.maxsize.
Here are the values:
Python2
>>> sys.maxint
9223372036854775807
Python3
>>> sys.maxsize
9223372036854775807
On the same platform, the values match. The value is typically 2**31 - 1 on a 32-bit platform and 2**63 - 1 on a 64-bit platform.
Replacing your call to maxint with maxsize will stop this particular Traceback.