本文整理汇总了Python中box.Box.read_string方法的典型用法代码示例。如果您正苦于以下问题：Python Box.read_string方法的具体用法？Python Box.read_string怎么用？Python Box.read_string使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类box.Box的用法示例。
在下文中一共展示了Box.read_string方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: print_updates
# 需要导入模块: from box import Box [as 别名]
# 或者: from box.Box import read_string [as 别名]
def print_updates(args):
data = yield getPage("http://developer.mbta.com/lib/gtrtfs/Passages.pb")
update = gtfs_realtime_pb2.FeedMessage()
update.ParseFromString(data)
trip_id_to_delays = defaultdict(list)
trip_ids = set()
for entity in update.entity:
trip_id = str(entity.trip_update.trip.trip_id)
trip_ids.add(trip_id)
for stop_time_update in entity.trip_update.stop_time_update:
# TODO: error-check for lack of arrival.delay
tup = stop_time_update.stop_sequence, stop_time_update.arrival.delay
trip_id_to_delays[trip_id].append(tup)
if trip_id in trip_id_to_delays:
trip_id_to_delays[trip_id] = sorted(trip_id_to_delays[trip_id], key=itemgetter(0))
con = sqlite3.connect(args.db)
cur = con.cursor()
# injection risk here! SQLite can't handle this many parameters, though
trip_ids_str = ", ".join(("'%s'" % escaped(x)) for x in trip_ids)
query = ('SELECT stop_times.offset, arrivals.blob, '
'trip_ids.route_id, trip_ids.trip_id, trip_stops.blob '
'FROM trip_ids '
'JOIN stop_times ON stop_times.trip_id = trip_ids.id AND trip_ids.trip_id IN (%s) '
'JOIN arrivals ON arrivals.id = stop_times.arrival_id '
'JOIN trip_stops ON trip_stops.id = stop_times.stop_list_id ') % trip_ids_str
results = cur.execute(query)
stop_results = defaultdict(list)
for offset, arrivals_blob_str, route_id, trip_id, stop_list_blob_str in results:
trip_id = str(trip_id)
arrivals_blob = Box(arrivals_blob_str)
arrivals_len = arrivals_blob.read_short()
stop_list_blob = Box(stop_list_blob_str)
stop_list_len = stop_list_blob.read_short()
for i in xrange(arrivals_len):
current_delay = 0
stop_id = stop_list_blob.read_string()
sequence_id = stop_list_blob.read_short()
arrival_minutes = arrivals_blob.read_short()
if trip_id in trip_id_to_delays[trip_id]:
for stop_sequence, delay in trip_id_to_delays[trip_id]:
if stop_sequence > sequence_id:
break
current_delay = delay
arrival_seconds = arrival_minutes * 60
tup = (offset + arrival_seconds, route_id, current_delay, trip_id, sequence_id)
stop_results[stop_id].append(tup)
now = datetime.now()
midnight = now.replace(hour=0, minute=0, second=0, microsecond=0)
now_seconds = (now - midnight).seconds
if args.stop_id in stop_results:
lst = stop_results[args.stop_id]
new_lst = [(seconds, route_id, delay, trip_id, sequence_id)
for (seconds, route_id, delay, trip_id, sequence_id) in lst
if (seconds + delay) > now_seconds]
new_lst = sorted(new_lst, key=lambda x: x[0] + x[2])
if len(new_lst) == 0:
print("No arrivals for %s" % args.stop_id)
else:
for seconds, route_id, delay, trip_id, sequence_id in new_lst:
print("Next arrival for stop %s (sequence %d) on"
" route %s is at %s with delay %d (total %s) on trip %s" % (args.stop_id,
sequence_id,
route_id,
time_to_string(seconds),
delay,
time_to_string(seconds + delay),
trip_id))
else:
print("%s is not in any of the trips specified by the SQL query" % args.stop_id)