[BUG] [Python] UNKNOWNBASETYPE appear in api py

[DoneSpeak]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

openapi-generator version

master

OpenAPI declaration file content or url

swagger.json

Generation Details

> python3 --version
Python 3.8.10

> java --version                                                                                            
openjdk 11.0.14 2022-01-18 LTS
OpenJDK Runtime Environment Zulu11.54+23-CA (build 11.0.14+9-LTS)
OpenJDK 64-Bit Server VM Zulu11.54+23-CA (build 11.0.14+9-LTS, mixed mode)

git clone https://github.com/openapitools/openapi-generator
cd openapi-generator
mvn clean package
java -jar modules/openapi-generator-cli/target/openapi-generator-cli.jar  generate \
    -i api-def/swagger.json \
    -g python \
    --artifact-id symbility_api \
    --package-name symbility_api \
    -o api/

Steps to reproduce

see ap/symbility_api/api/claim_api.py

The unknown_base_type, UNKNOWNBASETYPE, unknownbasetype and UNKNOWN_BASE_TYPE donesn't exist.

from symbility_api.model.unknownbasetype import UNKNOWNBASETYPE
.....
        self.claim_set_claim_status_endpoint = _Endpoint(
            settings={
                'response_type': (ClaimStatus,),
                'auth': [
                    'OAuth2'
                ],
                'endpoint_path': '/v03_08/claims/{claimID}/claim-status',
                'operation_id': 'claim_set_claim_status',
                'http_method': 'PUT',
                'servers': None,
            },
            params_map={
                'all': [
                    'claim_id',
                    'from_user_id_specification',
                    'unknown_base_type',
                ],
                'required': [
                    'claim_id',
                ],
                'nullable': [
                    'unknown_base_type',
                ],
                'enum': [
                ],
                'validation': [
                ]
            },
            root_map={
                'validations': {
                },
                'allowed_values': {
                },
                'openapi_types': {
                    'claim_id':
                        (str,),
                    'from_user_id_specification':
                        (str,),
                    'unknown_base_type':
                        (UNKNOWN_BASE_TYPE,),
                },
                'attribute_map': {
                    'claim_id': 'claimID',
                    'from_user_id_specification': 'From-User-ID-Specification',
                },
                'location_map': {
                    'claim_id': 'path',
                    'from_user_id_specification': 'header',
                    'unknown_base_type': 'body',
                },
                'collection_format_map': {
                }
            },
            headers_map={
                'accept': [
                    'application/json'
                ],
                'content_type': [
                    'application/json'
                ]
            },
            api_client=api_client
        )

after remove the unknowtype, I got:

Related issues/PRs

Suggest a fix

[wing328]

Thanks for reporting the issue. Can you try the branch inline-parameter-enhance in #12369, which provides better support for inline schemas?

[wing328]

The fix has been merged into master and included in the v6.0.0 release.