How to use custom password validators beside the django auth password validators?

So, as e4c5 mentioned, it is really simple and straightforward.

My CustomPasswordValidator looks like this:

from django.core.exceptions import ValidationErrorfrom django.utils.translation import ugettext as _class CustomPasswordValidator():    def __init__(self, min_length=1):        self.min_length = min_length    def validate(self, password, user=None):        special_characters = "[~\!@#\$%\^&\*\(\)_\+{}\":;'\[\]]"        if not any(char.isdigit() for char in password):            raise ValidationError(_('Password must contain at least %(min_length)d digit.') % {'min_length': self.min_length})        if not any(char.isalpha() for char in password):            raise ValidationError(_('Password must contain at least %(min_length)d letter.') % {'min_length': self.min_length})        if not any(char in special_characters for char in password):            raise ValidationError(_('Password must contain at least %(min_length)d special character.') % {'min_length': self.min_length})    def get_help_text(self):        return ""

Just add it to the list of AUTH_PASSWORD_VALIDATORS in settings.py and that's it!

AUTH_PASSWORD_VALIDATORS = [{    'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',},{    'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',},{    'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',},{    'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',},{   'NAME': 'registration.validators.CustomPasswordValidator',},]