_MAP = {
    "y": True,
    "yes": True,
    "t": True,
    "true": True,
    "on": True,
    "1": True,
    "n": False,
    "no": False,
    "f": False,
    "false": False,
    "off": False,
    "0": False,
}


def strtobool(value):
    try:
        return _MAP[str(value).lower()]
    except KeyError as e:
        raise ValueError('"{}" is not a valid bool value'.format(value)) from e