/usr/lib/python2.7/dist-packages/scrapy/squeues.py is in python-scrapy 1.5.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | """
Scheduler queues
"""
import marshal
from six.moves import cPickle as pickle
from queuelib import queue
def _serializable_queue(queue_class, serialize, deserialize):
class SerializableQueue(queue_class):
def push(self, obj):
s = serialize(obj)
super(SerializableQueue, self).push(s)
def pop(self):
s = super(SerializableQueue, self).pop()
if s:
return deserialize(s)
return SerializableQueue
def _pickle_serialize(obj):
try:
return pickle.dumps(obj, protocol=2)
# Python>=3.5 raises AttributeError here while
# Python<=3.4 raises pickle.PicklingError
except (pickle.PicklingError, AttributeError) as e:
raise ValueError(str(e))
PickleFifoDiskQueue = _serializable_queue(queue.FifoDiskQueue, \
_pickle_serialize, pickle.loads)
PickleLifoDiskQueue = _serializable_queue(queue.LifoDiskQueue, \
_pickle_serialize, pickle.loads)
MarshalFifoDiskQueue = _serializable_queue(queue.FifoDiskQueue, \
marshal.dumps, marshal.loads)
MarshalLifoDiskQueue = _serializable_queue(queue.LifoDiskQueue, \
marshal.dumps, marshal.loads)
FifoMemoryQueue = queue.FifoMemoryQueue
LifoMemoryQueue = queue.LifoMemoryQueue
|