[BUG][PYTHON] Lazy Imports Is Broken Starting In 7.16.0

[hawartens]

Bug Report Checklist

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

Description

It appears that lazy imports in python are broken again.

openapi-generator version

I believe this is a regression. Starting with openapi-generatotor-cli 7.15.0 it appeared that it was using python3-lazy-imports. This caused things to be MUCH better/more responsive in python since not everything had to be loaded beforehand. However it appears that in openapi-generatotor-cli 7.16.0 these changes don't work as they did in the previous version.

using openapi-gernator-cli 7.15.0 generated code
time ./myapp --help
real 0m0.581s
user 0m1.207s
sys 0m5.146s

using openapi-gernator-cli 7.16.0 generated code
time ./myapp --help
real 0m8.325s
user 0m8.138s
sys 0m5.448s

OpenAPI declaration file content or url

Generation Details

Steps to reproduce

Generated code by doing:
java -DmaxYamlCodePoints=99999999 -jar path/to/openapi-generator-cli-$(GENERATORVERSION).jar generate --skip-validate-spec -i myclient.spec
--inline-schema-options REFACTOR_ALLOF_INLINE_SCHEMAS=true --additional-properties=useOneOfDiscriminatorLookup=true --additional-properties=disallowAdditionalPropertiesIfNotPresent=false -g python -o src/myclient -p packageName=myclient -p packageVersion=$(MODULEVERSION)

Related issues/PRs

Suggest a fix

[wing328]

you will need to enable the lazyImports option (e.g. --additional-properties lazyImports=true in CLI)

(based on feedbacks, some users prefer not to have this option enabled by default)