Thanks all for your help! I am going to try this out first and will report back, because 4.1.1 has what seems to be the exact fix I need.
Changelog
4.2 (2017-04-26)
Add support for Python 3.6, drop support for Python 3.3.
4.1.1 (2016-04-30)
Support unpickling instances having a numeric timezone like +0430.
4.1 (2016-04-03)
Add support for Python 3.4 and 3.5.
Drop support for Python 2.6 and 3.2.
4.0.1 (2013-10-15)
Provide more backward compatible timezones. [vangheem]