print 'Currently we only support one timezone being active, selected: ' + timezones[
0]
print 'using timezone ' + timezones[0]
timezone = timezone(timezones[0])
start_time = timezone.localize(
datetime.datetime.combine(start_date, datetime.time.min))
#Check whether DST is active on the serviceday, that means AFTER 3am, hence the +1 day.
dst_active = start_time.timetuple().tm_isdst
if dst_active == 1:
print 'DST active on start_time, adding one hour to start_time'
calendar_start_time = time.mktime(
(start_time + timedelta(hours=dst_active)).timetuple())
print 'epoch time at which calendar starts: %d' % calendar_start_time
sids = db.service_ids()
print '%d distinct service IDs' % len(sids)
bitmask_for_sid = {}
dst_mask = 0
for sid in sids:
bitmask_for_sid[sid] = 0
for day_offset in range(32):
date = start_date + timedelta(days=day_offset)
# Add one day because DST is in effect after 3am but all busses will drive after 3am thus in DST.
time = timezone.localize(
datetime.datetime.combine(date + timedelta(days=1), datetime.time.min))
if time.timetuple().tm_isdst == 1:
dst_mask |= 1 << day_offset
# db.date_range() is somewhat slow.
# db.service_periods(sample_date) is slow because it checks its parameters with date_range().
timezones = db.agency_timezones()
if len(db.agency_timezones()) > 1:
print 'Currently we only support one timezone being active, selected: '+timezones[0]
print 'using timezone '+timezones[0]
timezone = timezone(timezones[0])
start_time = timezone.localize(datetime.datetime.combine(start_date, datetime.time.min))
#Check whether DST is active on the serviceday, that means AFTER 3am, hence the +1 day.
dst_active = start_time.timetuple().tm_isdst
if dst_active == 1:
print 'DST active on start_time, adding one hour to start_time'
calendar_start_time = time.mktime((start_time+timedelta(hours=dst_active)).timetuple())
print 'epoch time at which calendar starts: %d' % calendar_start_time
sids = db.service_ids()
print '%d distinct service IDs' % len(sids)
bitmask_for_sid = {}
dst_mask = 0
for sid in sids :
bitmask_for_sid[sid] = 0
for day_offset in range(32) :
date = start_date + timedelta(days = day_offset)
# Add one day because DST is in effect after 3am but all busses will drive after 3am thus in DST.
time = timezone.localize(datetime.datetime.combine(date + timedelta(days=1), datetime.time.min))
if time.timetuple().tm_isdst == 1:
dst_mask |= 1 << day_offset
# db.date_range() is somewhat slow.
# db.service_periods(sample_date) is slow because it checks its parameters with date_range().
# this is very inefficient, but run time is reasonable for now and it uses existing code.
