@classmethod
    def hook_before_transformation(self, row):
        pass
Return a matrix representing a month's calendar.
dataset/ETHPy150Open pboehm/django-data-migration/data_migration/migration.py/Migration.hook_before_transformation--crossover with--dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/python/Lib/calendar.py/Calendar.monthdays2calendar