Se si installa dateutil, quindi si potrebbe fare qualcosa di simile:
import datetime
import dateutil.relativedelta as reldate
def following_friday(dt):
rd=reldate.relativedelta(
weekday=reldate.FR(+2),
hours=+21)
rd2=reldate.relativedelta(
hour=3,minute=0,second=0,microsecond=0)
return dt+rd+rd2
Sopra, hours=+21
indica relativedelta
per incrementare lo dt
di 21 ore prima di trovare il venerdì successivo. Quindi, se dt
è il 12 marzo 2010 alle 2:00, l'aggiunta di 21 ore lo rende 11 00 dello stesso giorno, ma se dt
è dopo le 3:00, quindi aggiungendo 21 ore si spinge dt
in sabato.
Ecco alcuni codici di test.
if __name__=='__main__':
today=datetime.datetime.now()
for dt in [today+datetime.timedelta(days=i) for i in range(-7,8)]:
print('%s --> %s'%(dt,following_friday(dt)))
che produce:
2010-03-05 20:42:09.246124 --> 2010-03-19 03:00:00
2010-03-06 20:42:09.246124 --> 2010-03-19 03:00:00
2010-03-07 20:42:09.246124 --> 2010-03-19 03:00:00
2010-03-08 20:42:09.246124 --> 2010-03-19 03:00:00
2010-03-09 20:42:09.246124 --> 2010-03-19 03:00:00
2010-03-10 20:42:09.246124 --> 2010-03-19 03:00:00
2010-03-11 20:42:09.246124 --> 2010-03-19 03:00:00
2010-03-12 20:42:09.246124 --> 2010-03-26 03:00:00
2010-03-13 20:42:09.246124 --> 2010-03-26 03:00:00
2010-03-14 20:42:09.246124 --> 2010-03-26 03:00:00
2010-03-15 20:42:09.246124 --> 2010-03-26 03:00:00
2010-03-16 20:42:09.246124 --> 2010-03-26 03:00:00
2010-03-17 20:42:09.246124 --> 2010-03-26 03:00:00
2010-03-18 20:42:09.246124 --> 2010-03-26 03:00:00
2010-03-19 20:42:09.246124 --> 2010-04-02 03:00:00
po 'prima di 3:00:
two = datetime.datetime(2010, 3, 12, 2, 0)
for date in [two+datetime.timedelta(days=i) for i in range(-7,8)]:
result = following_friday(date)
print('{0}-->{1}'.format(date,result))
rendimenti:
2010-03-05 02:00:00-->2010-03-12 03:00:00
2010-03-06 02:00:00-->2010-03-19 03:00:00
2010-03-07 02:00:00-->2010-03-19 03:00:00
2010-03-08 02:00:00-->2010-03-19 03:00:00
2010-03-09 02:00:00-->2010-03-19 03:00:00
2010-03-10 02:00:00-->2010-03-19 03:00:00
2010-03-11 02:00:00-->2010-03-19 03:00:00
2010-03-12 02:00:00-->2010-03-19 03:00:00
2010-03-13 02:00:00-->2010-03-26 03:00:00
2010-03-14 02:00:00-->2010-03-26 03:00:00
2010-03-15 02:00:00-->2010-03-26 03:00:00
2010-03-16 02:00:00-->2010-03-26 03:00:00
2010-03-17 02:00:00-->2010-03-26 03:00:00
2010-03-18 02:00:00-->2010-03-26 03:00:00
2010-03-19 02:00:00-->2010-03-26 03:00:00
eh? .......... –
E se fosse lunedì? Dovrebbe calcolare 4 giorni da adesso? O tra 11 giorni? Ed è domenica 5 giorni da oggi? Si prega di precisare! – Tom
chiarimento aggiunto – mpen