dnmgmt/whoisdb/validators.py

from django.core import validators
from django.utils import six
from django.utils.deconstruct import deconstructible
from django.utils.translation import ugettext_lazy as _

import re

@deconstructible
class HandleValidator(validators.RegexValidator):
    regex = r'^[A-Z]+[0-9]+(-[A-Z]+)'
    message = _(
        'Enter a valid handle (all uppercase)'
    )
    flags = re.ASCII if six.PY3 else 0