我有 2 個(gè)日期時(shí)間對(duì)象的“范圍”，由開始日期和停止日期定義。我想創(chuàng)建一個(gè)新的“范圍”（開始和停止日期）來匹配前兩個(gè)范圍中的日期。這是我嘗試過的，但我的列表有問題：它似乎沒有正確獲取最后一個(gè)元素？import datetime#First date range is next week from monday to sunday:next_week_day = datetime.datetime.now().date() + datetime.timedelta(days=7)monday = next_week_day - datetime.timedelta(days=next_week_day.weekday())sunday = monday + datetime.timedelta(days=7)daterange = [monday + datetime.timedelta(days=x) for x in range(0, (sunday-monday).days)]  #Second daterange can be anything:start = datetime.date(2020, 8, 2)end = datetime.date(2020, 9, 25)daterange_2 = [start + datetime.timedelta(days=x) for x in range(0, (end-start).days)]  #then I create a list to add matching days to create the new rangedate_list = []for date in daterange:  for date_2 in daterange_2:    if date_2 == date:      date_list.append(date)#and retrieve first and last day in listfirst_date = date_list[0]second_date = date_list[-1]print(first_date, second_date)print(type(first_date), type(second_date))打印'2020, 9, 24'secondary_date 而不是'2020, 9, 25'. 我缺少什么？