(address)
return address.lower()
Validate a MAC address and return normalized form.

    Checks whether the supplied MAC address is formally correct and
    normalize it to all lower case.

    :param address: MAC address to be validated and normalized.
    :returns: Normalized and validated MAC address.
    :raises: InvalidMAC If the MAC address is not valid.
Validate a MAC address and return normalized form.
Validate a MAC address and return normalized form .
def validate_and_normalize_mac(address):
    """Validate a MAC address and return normalized form.

    Checks whether the supplied MAC address is formally correct and
    normalize it to all lower case.

    :param address: MAC address to be validated and normalized.
    :returns: Normalized and validated MAC address.
    :raises: InvalidMAC If the MAC address is not valid.

    """
    if not netutils.is_valid_mac(address):
        raise exception.InvalidMAC(mac=address)
    return address.lower()
def validate_and_normalize_mac ( address ) : if not netutils . is_valid_mac ( address ) : raise exception . InvalidMAC ( mac = address ) return address . lower ( )