data-spec-validator

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[Feature Request] Support `Checker([LIST_OF], LIST_OF=Optional[...])`

1

Here is a minimum-reproducible code: ```python3 class _Spec: data = Checker([LIST_OF], LIST_OF=Optional[str]) validate_data_spec({'data': ['str', None]}, _Spec) # TypeError: field: _Spec.data, reason: ['str', None] is not a spec of , detail:...

mattwang44