Python Daemon to Read Canbus J1939 or OBD2 basic engine data

Hi I would like a simple python script with a forever while loop that can:

1. (Must Have) read can0 J1939 basic engine data and for now output details to console

2. (Good but not required) connect to ODB2 and read basic engine data and output to console

Please ask as many questions as you like.
Thank you,
Chris