根据指定日期获取上一月和上上一月的所有日期

最新推荐文章于 2024-07-26 16:15:19 发布

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import math
import calendar
import datetime
from datetime import date
from dateutil.rrule import rrule, DAILY


def get_month_day(data):
    year = int(data[:4])  # 2018
    month = int(data[4:6])  # 08

    day_begin = datetime.datetime(year=year, month=month, day=1)  # 构造本月1号

    date_last_month = day_begin - datetime.timedelta(days=1)
    month_s = (date_last_month.strftime("%Y%m"))[4:]

    month_range = calendar.monthrange(int(year), int(month_s))  # 本月的天数

    month_range_list = []
    if month == 1:
        time_start = date(year - 1, int(month_s), 1)
        time_end = date(year - 1, int(month_s), month_range[1])
        for dt in rrule(DAILY, dtstart=time_start, until=time_end):
            month_range_list.append(dt.strftime("%Y%m%d"))
    else:
        time_start = date(year, int(month_s), 1)
        time_end = date(year, int(month_s), month_range[1])
        for dt in rrule(DAILY, dtstart=time_start, until=time_end):
            month_range_list.append(dt.strftime("%Y%m%d"))

    last_day_begin = datetime.datetime(year=year, month=int(month_s), day=1)  # 构造上月1号
    last_date_last_month = last_day_begin - datetime.timedelta(days=1)
    last_month_s = (last_date_last_month.strftime("%Y%m"))[4:]

    last_month_range = calendar.monthrange(int(year), int(last_month_s))  # 上月的天数

    last_month_range_list = []

    if month == 1 or 2:
        last_time_start = date(year - 1, int(last_month_s), 1)
        last_time_end = date(year - 1, int(last_month_s), last_month_range[1])
        for dt in rrule(DAILY, dtstart=last_time_start, until=last_time_end):
            last_month_range_list.append(dt.strftime("%Y%m%d"))

    else:
        last_time_start = date(year, int(last_month_s), 1)
        last_time_end = date(year, int(last_month_s), last_month_range[1])
        for dt in rrule(DAILY, dtstart=last_time_start, until=last_time_end):
            last_month_range_list.append(dt.strftime("%Y%m%d"))

    print(month_range_list, last_month_range_list)

    return month_range_list, last_month_range_list


get_month_day("20181109")

结果：

['20181001', '20181002', '20181003', '20181004', '20181005', '20181006', '20181007', 
'20181008', '20181009', '20181010', '20181011', '20181012', '20181013', '20181014', 
'20181015', '20181016', '20181017', '20181018', '20181019', '20181020', '20181021', 
'20181022', '20181023', '20181024', '20181025', '20181026', '20181027', '20181028', 
'20181029', '20181030', '20181031'] 
['20170901', '20170902', '20170903', '20170904', '20170905', '20170906', '20170907', 
'20170908', '20170909', '20170910', '20170911', '20170912', '20170913', '20170914', 
'20170915', '20170916', '20170917', '20170918', '20170919', '20170920', '20170921', 
'20170922', '20170923', '20170924', '20170925', '20170926', '20170927', '20170928', 
'20170929', '20170930']