Python计算指定日期范围内的节假日

#encoding=utf-8 
 
print '中国' 
 
#自动查询节日 给定起始日期和结束日期，自动获取总共的节假日天数 
 
import datetime 
from dateutil import rrule,easter 
 
 
try: set 
except NameError: from sets import Set as set 
 
#复活节 
def all_easter(start, end): 
  easters = [easter.easter(y) for y in xrange(start.year,end.year+1)] 
  return [d for d in easters if start<=d<=end] 
 
#开始到结束的节礼日列表 
def all_boxing(start, end): 
  one_day = datetime.timedelta(days=1) 
  boxings = [easter.easter(y) + one_day for y in xrange(start.year,end.year+1)] 
  return [d for d in boxings if start<=d<=end]  
 
#返回开始和结束日期之间的圣诞节列表 
def all_christmas(start, end): 
  christmases = [datetime.date(y,12,25) for y in xrange(start.year, end.year + 1)] 
  return [d for d in christmases if start<=d<=end] 
 
#返回劳动节列表 
def all_labor(start, end): 
  labors = rrule.rrule(rrule.YEARLY, bymonth=9, byweekday=rrule.MO(1),dtstart=start, until=end) 
  return [d.date() for d in labors] 
 
#读取设定的节假日 
def read_holidays(start, end, holidays_file='holidays.txt'): 
  try: 
    holidays_file = open(holidays_file) 
  except IOError,err: 
    print 'open failed' 
    return [] 
  holidays = [] 
   
  for line in holidays_file: 
    if line.isspace() or line.startswith('#'): 
      continue 
    try: 
      y,m,d = [int(x.strip()) for x in line.split(',')] 
      date = datetime.date(y,m,d) 
    except ValueError: 
      print 'Invalid line find' 
      continue 
    if start <= date <=end: 
      holidays.append(date)       
  holidays_file.close() 
  return holidays 
   
     
holidays_by_country = { 
'US':(all_easter,all_christmas,all_labor), 
'IT':(all_easter,all_boxing,all_labor) 
} 
 
def holidays(cc,start,end,holidays_file='holidays.txt'): 
  all_holidays= read_holidays(start,end,holidays_file) 
  functions = holidays_by_country.get(cc,()) 
  for function in functions: 
    all_holidays += function(start,end) 
  all_holidays = list(set(all_holidays)) 
  return (len(all_holidays),all_holidays) 
 
test_file = open(r'D:\123.txt','w') 
test_file.write('2014,3,23') 
test_file.close() 
 
print holidays('US',datetime.date(2014,1,1),datetime.date(2014,12,31),r'D:\123.txt')