Did you know that from python 3.5 there is support for type hints? Check out what type aliases and NewType are.

Python core community decided to create annotations from 3.0 version. Check out what are they all about and how to use them.

Today let's find out what is the purpose of the callable function and in which versions of python it does not work.

Today I've learned my lesson - I need to upgrade my python from 3.4.3 to 3.6.4 because simplenote python-api will not work with previous versions. Checkout my experience while upgrading :)