New to ADS1115 - need help to code python

I’m using a Pi3 B on buster with a brand new ADS1115 hat. Did the raspi-config and added the overlay and param lines. lsmod /grep looks good although seeed documentation for lsmod has 69632 and mine is 73728. I can cat in_voltage0_raw with a weak 1.5 V battery and get a reading of 10640 and a scale of 0.125 or 1.33V so that seems to work fine. There seems to be all kinds of conflicting information about installing libraries and coding. Can someone just give me a straight forward help so that I can read AIN0 with my python code? Thanks - a ADS1115 rookie.