"dataset" variable defined twice within 3 lines - intentionally?

[jenka13all]

in scripts/finetune_qa_models.py the variable "dataset" is defined on line 715 and then again on 718:

    dataset: List[Any] = []

    data: List
    dataset: str

It's used as a string until the end of the function, then append() is called on it, causing the error "str object has no attribute append". I've solved the issue by updating the first variable to be named "dataset_list" and append to that, returning it at the end of the function.