Fix python-fastapi signature of parameters for method

[diorcety]

If the parameter type is an map or a list an invalid python was producted, for example:

body: = Body(None, description=""),

This PR use function postProcessOperationsWithModels of AbstracPythonCodegen in order to use vendorExtensions.x-py-typing

[multani]

@diorcety do you have a test that you could add to show the problem and how your change fixes it?

[diorcety]

An integrated test? no for the moment, but a json file yes, the one from grafana: https://github.com/grafana/grafana/blob/main/public/openapi3.json

[wing328]

@diorcety can you please update the test spec modules/openapi-generator/src/test/resources/3_0/python-fastapi/petstore.yaml with a test or 2 and update the samples so that the CI can verify the change?

[diorcety]

@diorcety can you please update the test spec modules/openapi-generator/src/test/resources/3_0/python-fastapi/petstore.yaml with a test or 2 and update the samples so that the CI can verify the change?

Done. The example comes from grafana API. The issue is really related to "lazy" body definition which is solved by using the same function that client generator

[wing328]

I've filed https://github.com/OpenAPITools/openapi-generator/pull/19830 and limited the change only to python fastapi (as python client generators do not use the responses at the moment)

[wing328]

closed via https://github.com/OpenAPITools/openapi-generator/pull/19830

thanks for the contribution