[BUG][PYTHON] python model simple constuction uses a missing local before its avaliable

[RonnyPfannschmidt]

Bug Report Checklist

openapi-generator/modules/openapi-generator/src/main/resources/python/model_templates/method_init_simple.mustache

Line 37 in df5050f

path_to_item=_path_to_item,

this one is a reference before assignment

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Description

openapi-generator version

5.0.1

OpenAPI declaration file content or url

not needed

Steps to reproduce

not needed

Related issues/PRs

Suggested fix

a basic fix is just to pull the extraction up

a good fix would be to actually use python features to declare the arguments

i have the basic fix in a checkout and will contribute a PR later today likely with the enhanced fix