[Bug][Python] oauth

Description

I generated Python client from our valid OpenAPI Spec. But the OAuth2 code is incomplete (in my understanding)

The Getting Started section in the generated client looks like this

openapi-generator version

Latest release (commit d0d545bbdd409a177befa12cff809607751941f2) with the help of docker

OpenAPI declaration file content or url

OpenAPI Gist

Command line used for generation

./run-in-docker.sh generate -i ./clientapi-v3-openapi-spec.json -g python -o ./out/python-client

Steps to reproduce

Following the instructions here: https://github.com/OpenAPITools/openapi-generator#16---docker

Related issues/PRs

#776 for Java but same intention
Similar Issue in C-Sharp: #3714
Maybe: #2411

Suggest a fix/enhancement

Option 1:
I would find something like this helpful.

config=openapi_client.Configuration()
config.oauth.client.id= client_id
config.oauth.client.secret= client_secret
config.oauth.client.user= user
...

Option 2:
If it is required to write my own layer to handle/generate the oauth2 token I would appreciate if the documentation and the generated readme would point me to this.

Start with the linked OpenAPI declaration and the generated Python client from the documented Docker command, then compare its OAuth2 code and Getting Started README with the supplied gist. Review related issues #776, #3714, and #2411 before defining whether the completed work should add OAuth2 handling, improve configuration, or document the required custom layer.