code: def is_holiday(now=None, holidays="/etc/acct/holidays"):
      
      now = _Time(now)
      # Now, parse holiday file.
      if not os.path.exists(holidays):
          raise Exception("There is no holidays file: %s" % holidays)
  
      f = open(holidays, "r")
      # First, read all leading comments.
      line = f.readline()
      while line[0] == '*': line = f.readline()
  
      # We just got the year line.
      (year, primestart, primeend) = str.split(line)
      # If not the right year, we have no idea for certain.  Skip.
      if not year == now.year: return 0
  
      # Now the dates.  Check each against now.
      while line != '':
          # Of course, ignore comments.
          if line[0] == '*':
              line = f.readline()
              continue
  
          try:
              # Format: "1/1	New Years Day"
              (month, day) = str.split(str.split(line)[0], "/")
              # The _Time class has leading-zero padded day numbers.
              if len(day) == 1: day = '0' + day
              # Get month number from index map (compensate for zero indexing).
              month = MONTH_MAP[int(month) - 1]
  
              # Check the date.
              #print month, now.month, day, now.day
              if month == now.month and day == now.day:
                  return 1
  
              line = f.readline()
          except:
              # Skip malformed lines.
              line = f.readline()
              continue
  
      # If no match found, we must not be in a holiday.
      return 0
docs: is_holiday({now}, {holidays="/etc/acct/holidays"}