def formfield(self, **kwargs):
        try:
            from localflavor.us.forms import USSocialSecurityNumberField
        except __HOLE__:
            from django.contrib.localflavor.us.forms import USSocialSecurityNumberField            

        defaults = {'form_class': USSocialSecurityNumberField}
        defaults.update(kwargs)
        return super(EncryptedUSSocialSecurityNumberField, self).formfield(**defaults)
dataset/ETHPy150Open svetlyak40wt/django-fields/src/django_fields/fields.py/EncryptedUSSocialSecurityNumberField.formfield