It is easier to maintain python scripts compared to bash scripts. This migration will require a few iterations in recipes to deprecate the bash script.

Script location:
https://source.corp.google.com/github/flutter/engine/tools/gen_objcdoc.sh?q=tools%2Fgen_objcdoc.sh&ct=os