项目中账单每月扣款要考虑到工作日和休息日，故需要判断某一天是否为工作日或休息日，以及两个出账日之间的工作日间隔。
而每年假日办公布的假期是会变化的，通过下面的代码可以灵活获取每年的工作日休息日情况，可以直接使用，或者将数据存入各类数据库以供查询。

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#!usr/bin/python
# _*_coding:utf-8_*_
import sys
sys.path.append("..")
from datetime import datetime, timedelta
from dateutil import rrule
from dateutil.parser import parse


# 法定节假日是工作日的日期记录下来， 休息日是工作日的记录下来
hoilday_is_work = ['20180101', '20180215', '20180216', '20180219', '20180220', '20180221', '20180405', '20180406',
                   '20180430', '20180501', '20180618', '20180924', '20181001', '20181002 ', '20181003', '20181004',
                   '20181005']

week_2_work = ['20180211', '20180224', '20180408', '20180428', '20180929', '20180930']


# 计算两个日期间有多少个工作日
def workdays(start, end, holidays=0, days_off=None):
    if days_off is None:
        days_off = 5, 6
    workdays = [x for x in range(7) if x not in days_off]
    days = rrule.rrule(rrule.DAILY, dtstart=start, until=end, byweekday=workdays)
    return days.count() - holidays - 1


# 获取月份头尾
def get_start_end_month(x):
    the_year = datetime.today().strftime('%Y')
    # for x in xrange(1, 13):
    #     dt_start = (datetime(int(the_year), x, 1)).strftime("%Y%m%d")
    #     if 12 == x:
    #         dt_end = (datetime(int(the_year), 12, 31)).strftime("%Y%m%d")
    #     else:
    #         dt_end = (datetime(int(the_year), x+1, 1) - timedelta(days=1)).strftime("%Y%m%d")
    #     print dt_start, dt_end
    dt_start = (datetime(int(the_year), x, 1)).strftime("%Y-%m-%d")
    if 12 == x:
        dt_end = (datetime(int(the_year), 12, 31)).strftime("%Y-%m-%d")
    else:
        dt_end = (datetime(int(the_year), x+1, 1) - timedelta(days=1)).strftime("%Y-%m-%d")
    return [dt_start, dt_end]


# 组合数据
def gen_data(day1, day2):
    day1 = parse(day1)
    day2 = parse(day2)
    hoilday = 0
    for x in range((day2 - day1).days + 1):
        singledays = (day1 + timedelta(days=x)).strftime('%Y%m%d')
        if singledays in hoilday_is_work:
            hoilday += 1
        if singledays in week_2_work:
            hoilday -= 1
        # print(singledays)
    period_time = workdays(day1, day2, hoilday)
    print(period_time)
    return period_time


if __name__ == '__main__':
    try:
        day1 = '20180930'
        day2 = '20181010'
        gen_data(day1, day2)
    except BaseException as e:
        print(e)

    # debit = 10
    # balance = 28
    # month = 2
    # day1 = parse('201806{}'.format(debit))
    # day2 = parse('201806{}'.format(balance))
    # if balance > debit:
    #     day1 = parse('201807{}'.format(debit))
    # print(day1, day2)
    # period = day1 + relativedelta(months=month)
    # print(period)

    # hoilday = 0
    # for x in range((day2 - day1).days + 1):
    #     singledays = (day1 + timedelta(days=x)).strftime('%Y%m%d')
    #     if singledays in hoilday_is_work:
    #         hoilday += 1
    #     if singledays in week_2_work:
    #         hoilday -= 1
    #     print(singledays)
    # period = workdays(day1, day2, hoilday)
    # print(period)