Python: Confirmation function

confirm.py

def confirm() -> bool:
    """
    Ask user to enter Y or N (case-insensitive).
    :return: True if the answer is Y.
    :rtype: bool
    """
    answer = ""
    while answer not in ["y", "n"]:
        answer = input("Continue? [y/n]? ").lower()
    return answer == "y"