Native datetime instances are enough for basic cases but when you face more complex use-cases they often show limitations and are not so intuitive to work with.

Pendulum provides a cleaner and easier to use API while still relying on the standard library. So it's still datetime but better.

Github : https://github.com/sdispater/pendulum

Arrow is a Python library that offers a sensible and human-friendly approach to creating, manipulating, formatting and converting dates, times and timestamps.

Github : https://github.com/arrow-py/arrow