[serde generate] python: omit INDEX and VARIANTS when serialization is skipped
[serde generate] python: omit INDEX and VARIANTS when serialization is skipped

novifinancial/serde-reflection,novifinancial/serde-reflection,novifinancial/serde-reflection,novifinancial/serde-reflection,novifinancial/serde-reflection,novifinancial/serde-reflection,novifinancial/serde-reflection,novifinancial/serde-reflection,novifinancial/serde-reflection