text: """JP-specific Form helpers."""
  
  from django.forms.fields import RegexField, Select
  from django.utils.translation import ugettext_lazy as _
  
  from .jp_prefectures import JP_PREFECTURE_CODES, JP_PREFECTURES
  
  
  class JPPostalCodeField(RegexField):
      """
      A form field that validates its input is a Japanese postcode.
  
      Accepts 7 digits, with or without a hyphen.
      """
  
      default_error_messages = {
          'invalid': _('Enter a postal code in the format XXXXXXX or XXX-XXXX.'),
      }
  
      def __init__(self, *args, **kwargs):
          super(JPPostalCodeField, self).__init__(r'^\d{3}-\d{4}$|^\d{7}$', *args, **kwargs)
  
      def clean(self, value):
          """
          Validates the input and returns a string that contains only numbers.
          """
          value = super(JPPostalCodeField, self).clean(value)
          if value in self.empty_values:
              return self.empty_value
          return value.replace('-', '')
  
  
  class JPPrefectureSelect(Select):
      """A Select widget that uses a list of Japanese prefectures as its choices."""
  
      def __init__(self, attrs=None):
          super(JPPrefectureSelect, self).__init__(attrs, choices=JP_PREFECTURES)
  
  
  class JPPrefectureCodeSelect(Select):
      """
      A Select widget for Japanese prefecture codes.
  
      It uses a list of Japanese prefectures as its choices and the prefectures code as the post value.
      """
  
      def __init__(self, attrs=None):
          super(JPPrefectureCodeSelect, self).__init__(attrs, choices=JP_PREFECTURE_CODES)
  