python擷取各個時間段

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#當前一周       def week_get_now(self):         import datetime        d = datetime.datetime.now()        dayscount = datetime.timedelta(days=d.isoweekday())         dayto = d        sixdays = datetime.timedelta(days=6)         dayfrom = dayto - sixdays         date_from = datetime.datetime(dayfrom.year, dayfrom.month, dayfrom.day, 0, 0, 0)         date_to = datetime.datetime(dayto.year, dayto.month, dayto.day, 23, 59, 59)         return str(date_from), str(date_to)                 #上一周時間段        def week_get(self):         import datetime        d = datetime.datetime.now()        dayscount = datetime.timedelta(days=d.isoweekday())         dayto = d - dayscount         sixdays = datetime.timedelta(days=6)         dayfrom = dayto - sixdays         date_from = datetime.datetime(dayfrom.year, dayfrom.month, dayfrom.day, 0, 0, 0)         date_to = datetime.datetime(dayto.year, dayto.month, dayto.day, 23, 59, 59)         return str(date_from), str(date_to)     #上個月時間段    def month_get(self):            import datetime        d = datetime.datetime.now()        dayscount = datetime.timedelta(days=d.day)           dayto = d - dayscount            date_from = datetime.datetime(dayto.year, dayto.month, 1, 0, 0, 0)           date_to = datetime.datetime(dayto.year, dayto.month, dayto.day, 23, 59, 59)          return str(date_from), str(date_to) 

python擷取各個時間段