mysql-connector doesn't give exact type. You can use:

1. https://mypy.readthedocs.io/en/stable/common_issues.html#spurious-errors-and-locally-silencing-the-checker

Sometimes it's ok.

holiday_date = row[ 0 ]  # type: ignore[operator]

holiday_date: date = row[ 0 ]

3. https://docs.python.org/3/library/typing.html#typing.cast

holiday_date = cast(date, row[0])

4. https://docs.python.org/3/library/typing.html#typing.Any

holiday_date: Any = row[ 0 ]