TypeError when model default value is a list

Describe the bug
When generating models for an API where a default argument is a list of enums, a TypeError is raised on this line:

return f"{prop.class_info.name}.{inverse_values[default]}"

A possible fix could be to explicitly check for this case. Below is a proposed fix, but I'm not familiar enough with the codebase to know whether this is a correct fix. However, I was able to parse the API docs correctly with this fix in place:

if type(default) is list:
    return [f"prop.class_info.name.inverse_values[d]" for d in default]
else:
    return f"{prop.class_info.name}.{inverse_values[default]}"

To Reproduce
Steps to reproduce the behavior:

1. Run openapi-python-client generate --url https://sand-docs.ilevelsolutions.eu/openapi.yaml
2. See error

Expected behavior
The API docs should be able to be parsed

OpenAPI Spec File
https://sand-docs.ilevelsolutions.eu/openapi.yaml

Desktop (please complete the following information):

• OS: macOS 13.1
• Python Version: 3.10
• openapi-python-client version: 0.13.1

Commencez dans openapi_python_client/parser/properties/init.py vers la ligne 463 et reproduisez l’échec avec openapi-python-client generate --url https://sand-docs.ilevelsolutions.eu/openapi.yaml. Suivez la manière dont les valeurs par défaut d’enum sous forme de liste sont représentées et vérifiez les tests pertinents du parser. C’est terminé lorsque la spécification est générée correctement sans le TypeError et que le comportement existant reste intact.