def close(self):
        if not self.fileclosed:
            self.fileclosed = 1
            self._store_workbook()
``REGISTRATION_OPEN``, when ``True``, permits registration.
dataset/ETHPy150Open jmcnamara/XlsxWriter/xlsxwriter/workbook.py/Workbook.close--crossover with--dataset/ETHPy150Open ubernostrum/django-registration/registration/tests/base.py/WorkflowTestCase.test_registration_open