Aw man. Just show the code. 
Also - gpiod is purely for GPIO (binary read/write to/from lines) functionality. It doesn’t do anything else.
I believe I already mentioned this - to use UART use pyserial, to use I2C use smbus2.
As to SPI and PWM I do not know. There’s probably libraries for that too.
OHH!! “smbus”… through a weird trick of the brain through all of the crap I’ve been torturing myself with in learning the Zero3W and the linux stuff, I read that as “symbus”. Not until your reply did I realize that I mis-read the name. I now have it loaded and will start using it in the morning.
Thanks for saving me, again!