Checkout kapitan, with its Kadet input type, you can generate YAML with a semi-opinionated Python based DSL: https://kapitan.dev/compile/#kadet
I am the author and have used it at a FAANG previously and now more recently at my startup to manage large, complex kubernetes and terraform managed infrastructure.
Check out Pulumi, it's a similar idea of python (or other languages) to generate container orchestration config for Kubernetes or other systems: https://github.com/pulumi/pulumi
