Rock Pi X UART2

Hello,
I’m using the ROCK Pi X with Lubuntu. I’m trying to communicate on UART2 (including the RTS signal) on Python.

Which serial port is UART2 and how do I initialize it?
Is it ttyS0? Do I need to enable it somehow?

Which Python library will allow me to use UART2?

Did you check this:

https://wiki.radxa.com/RockpiX/dev/libmraa