On Tue, 17 Jul 2007 14:57:16 -0700, Walker Lindley <[EMAIL PROTECTED]> wrote: >I'm working on a distributed computing program and need to send Python >objects over a TCP socket. Specifically, the objects that I'm working with >subclass the builtin list type (I don't know whether or not that matters), >but also include other data fields. These objects are put into dictionaries >along with some other control information and the dictionaries are pickled >and sent across the network. I'm using the makefile() function in socket to >get a file descriptor for the socket and then calling pickle.dump with the >dictionary object and the socket file descriptor. I was originally using >pickle protocol 0, but then read about the possibility of buffering problems >and realized that protocol 0 was giving me strings about 1500 characters >long. After some testing, I settled on protocol 2 which manages to package >the data into about 400 characters. > >In any case, the client side of the program appears to send the data just >fine, at least as far as I can tell. On the server side, however, the data >takes a very long time to get there and then I get an error in the pickle >module: >Traceback (most recent call last): > File "server.py", line 176, in <module> > serv.runServer() > File "server.py", line 99, in runServer > recvPacket = pickle.load(clientFile) > File "/usr/lib/python2.5/pickle.py", line 1370, in load > return Unpickler(file).load() > File "/usr/lib/python2.5/pickle.py", line 858, in load > dispatch[key](self) > File "/usr/lib/python2.5/pickle.py", line 1187, in load_appends > mark = self.marker() > File "/usr/lib/python2.5/pickle.py", line 874, in marker > while stack[k] is not mark: k = k-1 >IndexError: list index out of range > >Hopefully I'm doing something obviously wrong, but if anyone can help based >on that description or if you need to see the source, please let me know >(it's GPL'd). Thank you so much for any help. >
The obvious thing you're doing wrong is using pickle over a network. ;) http://jcalderone.livejournal.com/15864.html Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
