Are you still using Python 2.7?
If so, why?
Do you know Python 3 is 10 years old?
A lot has changed since the early days of Python 3.0, today most frameworks and libraries either support both, have dropped Python 2 or are about to do so.
Python 3 is better than Python 2 (and is about the same speed). Also Python 2 is not going to be maintained at all by 2020 and has been in feature freeze for a long time (since 2010 I think).
If you are still using Python 2.7 daily at work without a plan to migrate in sight, please talk about it internally. If the reason, for you being stuck at work on Python 2, is a specific third party library that hasn't been migrated so far, please ask your company to actually fund the open source project so they can migrate ;-)
Python has been around for 27 years, Python 2 18 years, Python 3 10 years and the Python community is bigger than ever. The investment in Python 3 is definitely worth it.
Let's talk about it and if you need help to make the decision I think I can help.