python中时间转换，获取上一月上一周，本月，本周

客官°小女子只卖身不卖艺 2021-07-26 16:28 637阅读 0赞

def paserTime(timestamp):
        t = time.time()
        f=time.localtime(timestamp/1000)
        print (t)                       #原始时间数据
        # print (int(t))                  #秒级时间戳
        print (int(round(t * 1000)))    #毫秒级时间戳
    
        #nowTime = lambda: int(round(t * 1000))
      #  print(nowTime());  # 毫秒级时间戳，基于lambda
        nowTime = lambda:timestamp
        str=time.strftime('%Y-%m-%d %H:%M:%S',f)
        print(str)  # 日期格式化
    
        return str
    # paserTime(time.time())
    def now2():
        nowTime = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')  # 现在
        print(nowTime)
    def nowTime():
        t = time.time()
        f = time.localtime(int(t))
        # print(t)
        str = time.strftime('%Y-%m-%d %H:%M:%S', f)
        print(str)  # 日期格式化
        return str
    # nowTime()
    def long2Str(longTime):
        f = time.localtime(int(longTime))
        # print(t)
        str = time.strftime('%Y-%m-%d %H:%M:%S', f)
        print(str)  # 日期格式化
        return str
    def str2time(str):
        date_time = datetime.datetime.strptime(str, '%Y-%m-%d %H:%M:%S')
        # print(date_time)
        return date_time
    
    def str2timestamp(str):
        timstamp=time.mktime(time.strptime(str, '%Y-%m-%d %H:%M:%S'))
        # print(timstamp)
        return timstamp
        # time.mktime()   与    time.localtime() 互为还原函数。
        # time.mktime(timetuple) ：将时间元组转换成时间戳
        # time.localtime([timestamp])：将时间戳转会为时间元组
    # print(str2timestamp(str2)-str2timestamp(str))
    def date2datetime(date_param):
        date_str = date_param.strftime('%Y-%m-%d %H:%M:%S')
        date_time = datetime.datetime.strptime(date_str, '%Y-%m-%d %H:%M:%S')
        # print(date_time)
        return date_time
    def month():
        first_day=datetime.date.today().replace(day=1).strftime('%Y-%m-%d %H:%M:%S')
        print(first_day)
    
        _end_time = last_day_of_month(datetime.date.today()).__str__() + ' ' + '23:59:59'
        print(_end_time)
    
    def get_current_week():
        monday, sunday = datetime.date.today(), datetime.date.today()
        one_day = datetime.timedelta(days=1)
        while monday.weekday() != 0:
            monday -= one_day
        while sunday.weekday() != 6:
            sunday += one_day
        monday_datetime = date2datetime(monday)
        sunday_datetime = date2datetime(sunday)
        print(monday_datetime)
        return monday_datetime, sunday_datetime
        # 返回时间字符串
        #  return datetime.datetime.strftime(monday, "%Y/%m/%d") + ' 00:00:00+08:00', datetime.datetime.strftime(sunday, "%Y/%m/%d")+ ' 23:59:59+08:00'
    
    
    def last_day_of_month(any_day):
        """
        获取获得一个月中的最后一天
        :param any_day: 任意日期
        :return: string
        """
        next_month = any_day.replace(day=28) + datetime.timedelta(days=4)  # this will never fail
        return next_month - datetime.timedelta(days=next_month.day)
    # 上月第一天和最后一天
    def last_month():
        this_month_start = datetime.datetime(now.year, now.month, 1)
        last_month_end = this_month_start - timedelta(days=1) + datetime.timedelta(
            hours=23, minutes=59, seconds=59)
        last_month_start = datetime.datetime(last_month_end.year, last_month_end.month, 1)
        print('---last_month_start = {} last_month_end = {}'.format(last_month_start,last_month_end))
        return last_month_start,last_month_end
    # 本月第一天和最后一天
    def this_month():
        this_month_start = datetime.datetime(now.year, now.month, 1)
        # this_month_end = datetime.datetime(now.year, now.month + 1, 1) - timedelta(days=1) + datetime.timedelta(
            # hours=23, minutes=59, seconds=59)
        next_month = now.replace(day=28) + datetime.timedelta(days=4)
        this_month_end = next_month - datetime.timedelta(days=next_month.day)+ datetime.timedelta(
            hours=23, minutes=59, seconds=59)
        print('--- this_month_start = {} this_month_end = {}'.format(this_month_start, this_month_end))
        return this_month_start,this_month_end
    # 上周第一天和最后一天
    def last_week():
        last_week_start = now - timedelta(days=now.weekday() + 7)
        last_week_end = now - timedelta(days=now.weekday() + 1)+ datetime.timedelta(
            hours=23, minutes=59, seconds=59)
        print('--- last_week_start = {} last_week_end = {}'.format(last_week_start, last_week_end))
        return last_week_start,last_week_end
    # 本周第一天和最后一天
    def this_week():
        this_week_start = now - timedelta(days=now.weekday())
        this_week_end = now + timedelta(days=6 - now.weekday())+ datetime.timedelta(
            hours=23, minutes=59, seconds=59)
        print('--- this_week_start = {} this_week_end = {}'.format(this_week_start, this_week_end))
        return this_week_start, this_week_end
    if __name__=='__main__':
        str='2017-02-28 03:40:10'
        now_time = str2time(str)
        # now_time = datetime.datetime.today()
        now =datetime.datetime(now_time.year, now_time.month, now_time.day)
        # longTime=str2timestamp(str)+60*2
        # long2Str(longTime)
        # now()
        # month()
        # month2()
        # print(get_current_week())
        print(last_day_of_month(now))
        last_month()
        this_month()
        last_week()
        this_week()