need advice for Python interaction with bitcoin-core wallet
Maybe you miss how these libraries are implemented, in fact, the standard implementation of python JSON-RPC library already discover RPC function and map to python function, here you can read the official wiki.

If you read the code of this library you cannot find the specific implementation for every method, it's a generic wrapper around the implementation of JSON-RPC standard library.

The feature of this wrapper in detail are specified in README.md file.