Function _check_subject

mne/utils/check.py:307–328

Get subject name from class.

(
    first,
    second,
    *,
    raise_error=True,
    first_kind="class subject attribute",
    second_kind="input subject",
)

def _check_subject(
    first,
    second,
    *,
    raise_error=True,
    first_kind="class subject attribute",
    second_kind="input subject",
):
    """Get subject name from class."""
    if second is not None:
        _validate_type(second, "str", "subject input")
        if first is not None and first != second:
            raise ValueError(
                f"{first_kind} ({repr(first)}) did not match {second_kind} ({second})"
            )
        return second
    elif first is not None:
        _validate_type(first, "str", f"Either {second_kind} subject or {first_kind}")
        return first
    elif raise_error is True:
        raise ValueError(f"Neither {second_kind} subject nor {first_kind} was a string")
    return None


def _check_preload(inst, msg):