old_contents: from django.conf import settings
  from django.db import models
  from django.utils.encoding import smart_unicode
  
  import bleach
  
  
  class SanitizedCharField(models.CharField):
      
      def __init__(self, allowed_tags, allowed_attributes, strip=False, *args, **kwargs):
          self._sanitizer_allowed_tags = allowed_tags
          self._sanitizer_allowed_attributes = allowed_attributes
          self._sanitizer_strip = strip
          super(SanitizedCharField, self).__init__(*args, **kwargs)
  
      def to_python(self, value):
          value = super(SanitizedCharField, self).to_python(value)
          value = bleach.clean(value, tags=self._sanitizer_allowed_tags,
              attributes=self._sanitizer_allowed_attributes, strip=self._sanitizer_strip)
          return smart_unicode(value)
  
  
  class SanitizedTextField(models.TextField):
      
      def __init__(self, allowed_tags, allowed_attributes, strip=False, *args, **kwargs):
          self._sanitizer_allowed_tags = allowed_tags
          self._sanitizer_allowed_attributes = allowed_attributes
          self._sanitizer_strip = strip
          super(SanitizedTextField, self).__init__(*args, **kwargs)
  
      def to_python(self, value):
          value = super(SanitizedTextField, self).to_python(value)
          value = bleach.clean(value, tags=self._sanitizer_allowed_tags,
              attributes=self._sanitizer_allowed_attributes, strip=self._sanitizer_strip)
          return smart_unicode(value)
  
      def get_prep_value(self, value):
          value = super(SanitizedTextField, self).get_prep_value(value)
          value = bleach.clean(value, tags=self._sanitizer_allowed_tags,
              attributes=self._sanitizer_allowed_attributes, strip=self._sanitizer_strip)
          return value
  
  
  if 'south' in settings.INSTALLED_APPS:
      from south.modelsinspector import add_introspection_rules
      add_introspection_rules([], ["^sanitizer\.models\.SanitizedCharField"])
      add_introspection_rules([], ["^sanitizer\.models\.SanitizedTextField"])
new_contents: from django.conf import settings
  from django.db import models
  from django.utils.encoding import smart_unicode
  
  import bleach
  
  
  class SanitizedCharField(models.CharField):
      
      def __init__(self, allowed_tags=[], allowed_attributes=[],
                   strip=False, *args, **kwargs):
          self._sanitizer_allowed_tags = allowed_tags
          self._sanitizer_allowed_attributes = allowed_attributes
          self._sanitizer_strip = strip
          super(SanitizedCharField, self).__init__(*args, **kwargs)
  
      def to_python(self, value):
          value = super(SanitizedCharField, self).to_python(value)
          value = bleach.clean(value, tags=self._sanitizer_allowed_tags,
              attributes=self._sanitizer_allowed_attributes, strip=self._sanitizer_strip)
          return smart_unicode(value)
  
  
  class SanitizedTextField(models.TextField):
      
      def __init__(self, allowed_tags=[], allowed_attributes=[], strip=False,
                   *args, **kwargs):
          self._sanitizer_allowed_tags = allowed_tags
          self._sanitizer_allowed_attributes = allowed_attributes
          self._sanitizer_strip = strip
          super(SanitizedTextField, self).__init__(*args, **kwargs)
  
      def to_python(self, value):
          value = super(SanitizedTextField, self).to_python(value)
          value = bleach.clean(value, tags=self._sanitizer_allowed_tags,
              attributes=self._sanitizer_allowed_attributes, strip=self._sanitizer_strip)
          return smart_unicode(value)
  
      def get_prep_value(self, value):
          value = super(SanitizedTextField, self).get_prep_value(value)
          value = bleach.clean(value, tags=self._sanitizer_allowed_tags,
              attributes=self._sanitizer_allowed_attributes, strip=self._sanitizer_strip)
          return value
  
  
  if 'south' in settings.INSTALLED_APPS:
      from south.modelsinspector import add_introspection_rules
      add_introspection_rules([], ["^sanitizer\.models\.SanitizedCharField"])
      add_introspection_rules([], ["^sanitizer\.models\.SanitizedTextField"])
subject: Make allowed_tags and allowed_attributes in CharField and TextField default to []. Fixes #3. Thanks oxys for the report.