[BUG][Python] Syntax Error when importing generated library

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?

Description

Similar error as #17447, tested on both latest stable version 7.3.0 and latest master branch commit.

openapi-generator version

7.3.0

OpenAPI declaration file content or url

https://github.com/Endgrate/OpenAPI

Generation Details

Steps to reproduce

Copy OpenAPI spec

Run

openapi-generator-cli generate -g python -o test --additional-properties=projectName=endgrate,packageName=endgrate --openapi-normalizer SET_TAGS_FOR_ALL_OPERATIONS=endgrate -i OpenAPI/openapi.yaml

Install

pip install -e test

Import in Python

import endgrate

Gives:

line 26
    from endgrate.models.dict[str,_configuration_callback_schema_passthrough_schemas_value] import Dict[str, ConfigurationCallbackSchemaPassthroughSchemasValue]
                             ^
SyntaxError: invalid syntax

Related issues/PRs

#17447, seems like #17659 did not handle all edge cases? Does this have to do with beta support for OpenAPI 3.1?

Start by running the stated openapi-generator command with OpenAPI/openapi.yaml, then install the generated test package and reproduce the import failure. Inspect how the Python generator turns the schema into the generated model import shown in the traceback; done means the generated library installs and import endgrate completes without a SyntaxError.