i have the following custom extenstion of Queue.Queue() to save and load
queue contents but I think there's a problem with it.
Does anybody know qhether Queue.Queue() is pickle-able? if so,
can I get sample code? If not, can anybody recommend a pickle-able
Queue from another library that I might be able to use?
Thank you for any help!
Here's my "PersistentQueue" extension:
import cPickle
import Queue
import os
from os.path import *
import Queue
import os
from os.path import *
class PersistentQueue(Queue.Queue):
def __init__(self, maxsize=0):
#print "init"
Queue.Queue.__init__(self,maxsize)
def saveState(self, file):
fullFilePath = join(os.getcwd(),'savedStates', file)
! ; #print fullFilePath
f = open(fullFilePath, 'w')
l = []
while not self.empty():
l.append(self.get())
cPickle.dump(l, f)
f.close()
def __init__(self, maxsize=0):
#print "init"
Queue.Queue.__init__(self,maxsize)
def saveState(self, file):
fullFilePath = join(os.getcwd(),'savedStates', file)
! ; #print fullFilePath
f = open(fullFilePath, 'w')
l = []
while not self.empty():
l.append(self.get())
cPickle.dump(l, f)
f.close()
def loadState(self, file):
fullFilePath = join(os.getcwd(),'savedStates', file)
#print fullFilePath
f = open(fullFilePath)
l = cPickle.load(f)
f.close()
for i in l:
self.put(i)
fullFilePath = join(os.getcwd(),'savedStates', file)
#print fullFilePath
f = open(fullFilePath)
l = cPickle.load(f)
f.close()
for i in l:
self.put(i)
if __name__ == '__main__':
q = PersistentQueue(20)
q.loadState("q1.sav")
print q.get()
q.put("four")
q.saveState("q1.sav")
q.saveState("q1.sav")
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