lib/source/ephemeris.py

   1 from datetime import datetime, timedelta
   2 import time
   3 import calendar
   4
   5 class Ephemeris:
   6
   7     def __init__(self, start = time.strptime('19960101000000', '%Y%m%d%H%M%S'),
   8                  end = datetime.now(), features = []):
   9         self._start = start
  10         self._end = end
  11         self._features = features
  12
  13         self._dated_features = {}
  14
  15
  16
  17     def update(self):
  18         pass
  19
  20
  21
  22     @property
  23     def dated_features(self):
  24         if self._dated_features == {}:
  25             date = self._start
  26             while date <= self._end:
  27                 dict_hour = {}
  28                 Date = time.strptime(datetime.strftime(date, '%m/%d/%Y %H:%M:%S'), '%m/%d/%Y %H:%M:%S')
  29                 for feature in self._features:
  30                     if feature == 'hour':
  31                         dict_hour['hour'] = Date.tm_hour
  32                     elif feature == 'dayInWeek':
  33                         dict_hour['dayInWeek'] = Date.tm_wday
  34                     elif feature == 'dayInMonth':
  35                         dict_hour['dayInMonth'] = Date.tm_mday
  36                     elif feature == 'month':
  37                         dict_hour['month'] = Date.tm_mon
  38                     elif feature == 'year':
  39                         dict_hour['year'] = Date.tm_year
  40                     elif feature == 'dayInYear':
  41                         # Si c'est une année bissextile et qu'on est après le 29 février, on compte une journée
  42                         # dans l'année de moins, car on va supprimer les 29 févriers, de sorte que les 14 juillets,
  43                         # les 24 décembre... tombent toujours
  44                         if calendar.isleap(Date.tm_year) and Date >= time.strptime("29/02/"+str(Date.tm_year), "%d/%m/%Y"):
  45                             dict_hour['dayInYear'] = Date.tm_yday -1
  46                         else:
  47                             dict_hour['dayInYear'] = Date.tm_yday
  48                     elif feature == 'weekInYear':
  49                         dict_hour['weekInYear'] = date.isocalendar()[1]
  50                 self._dated_features[date] = dict_hour
  51                 date += timedelta(hours=1)
  52         return self._dated_features