Sometimes it's easier to just codegen than to figure out the performant way to do something like read some spec file and generate an API from it. Especially if

Sometimes it's easier to just codegen than to figure out the performant way to do something like read some spec file and generate an API from it. Especially if the generation target is something like Java or C++. Code generation is also nice for things like generating Typescript definitions for your frontend to interact with a backend API. The value is partly derived from Python being a language with great introspection tools, so the codegen code itself is easy. It's not so much that this is the principled way of doing things, but it might be a way that is good enough and gets you where you need to be, in a slightly reproducible fashion.