[python] Issue 13997 fix pass in model instances to new

[spacether]

[python] Issue 13997 fix pass in model instances to new
This PR is synonymous with openapi-json-schema-tools/openapi-json-schema-generator#82

@Linux13524
With my update, this test code passes when the models from the issue were generated:

ev = event.Event(name="test", properties={"name": "test"})
er = event_request.EventRequest(event=ev)
self.assertEqual(
    er,
    {
        'event': {
            'name': 'test',
            'properties': {'name': 'test'}
        }
    }
)

PR checklist

• Read the contribution guidelines.
• Pull Request title clearly describes the work in the pull request and Pull Request description provides details about how to validate the work. Missing information here may result in delayed response from the community.
• Run the following to build the project and update samples:

  ./mvnw clean package 
  ./bin/generate-samples.sh
  ./bin/utils/export_docs_generators.sh
  

  Commit all changed files.
  This is important, as CI jobs will verify all generator outputs of your HEAD commit as it would merge with master.
  These must match the expectations made by your contribution.
  You may regenerate an individual generator by passing the relevant config(s) as an argument to the script, for example ./bin/generate-samples.sh bin/configs/java*.
  For Windows users, please run the script in Git BASH.
• File the PR against the correct branch: master (6.3.0) (minor release - breaking changes with fallbacks), 7.0.x (breaking changes without fallbacks)
• If your PR is targeting a particular programming language, @mention the technical committee members, so they are more likely to review the pull request.

[OmarBouslama]

Hello
Thank you for the fix. When is the next tag planned with this fix included ?

[spacether]

Not sure, whenever @wing328 decides to do a release

[OmarBouslama]

ok, we would really appreciate a new release soon if this is possible. In fact this issue is blocking us from generating (and updating old SDKs) SDKs with the lastest openapi-generator

[spacether]

If you need this sooner, how about using this release, which has the feature that you need?
https://github.com/openapi-json-schema-tools/openapi-json-schema-generator/releases/tag/1.0.4

[OmarBouslama]

what is the difference between openapi-generator and openapi-json-schema-generator ?

[spacether]

openapi-json-schema-generator for now contains the python generator only and the project's goals and history are described in its readme here: https://github.com/openapi-json-schema-tools/openapi-json-schema-generator#5---about-us