Now that tpm2_pytss is stable I've started collecting worked examples for some common situations, eg: reading PCRs, quotes etc.
tpm_pytss is here: https://github.com/tpm2-software/tpm2-pytss
First you will need a TPM, either a real TPM or the IBM SW TPM is a good substitute.
Each example can be run just by typing python3 example.py
Each example has an accompanying description as markdown file, plus annotated code.