def mutate(self, day, text):
        'Mutates a day in the HTML month.'
        row, column = self.__row_column(day)
        self.__table.mutate(row, column, '<b>%02d</b>\n<hr>\n%s' % (day, text))
        return self
Mutates a day in the HTML month.
recipes/Python/578187_Calendar_Maker/recipe-578187.py