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"""MAC Address."""
# standard
import re
# local
from .utils import validator
@validator
def mac_address(value: str, /):
"""Return whether or not given value is a valid MAC address.
This validator is based on [WTForms MacAddress validator][1].
[1]: https://github.com/wtforms/wtforms/blob/master/src/wtforms/validators.py#L482
Examples:
>>> mac_address('01:23:45:67:ab:CD')
True
>>> mac_address('00:00:00:00:00')
ValidationError(func=mac_address, args={'value': '00:00:00:00:00'})
Args:
value:
MAC address string to validate.
Returns:
(Literal[True]): If `value` is a valid MAC address.
(ValidationError): If `value` is an invalid MAC address.
"""
return re.match(r"^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$", value) if value else False