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Mike Solomon
mike at mrlventures.com
Sun Apr 10 18:35:21 EDT 2005
Yes, it was several hours after I made that post that I located this gem, which pointed me in that direction. http://mail.python.org/pipermail/python-bugs-list/2005-March/028011.html I haven't made any commitments to python 2.4 yet, so it looks like I'll just have to wait. Thanks for the pointer. -ms On Apr 10, 2005, at 1:20 PM, Alan Davies wrote: > If you don't need the features of Python 2.4, you could try going back > to Python 2.3.4 (not 2.3.5), which is how I have avoided the problem > for now. > > --Alan > > On Sat, 9 Apr 2005 14:06:02 -0700, "Mike Solomon" > <mike at mrlventures.com> > said: >> I too see this problem and it's driving me bananas. >> >> I've got Apache 2.0.53, mod_python 3.1.4, python 2.4 installed under >> SuSE 9.1. My servlet code and apache config are exactly the same as >> Alan's (to minimize potential setup variables.) >> >> My specific problem is that pickling causes this unmarshal error: >> >> (it doesn't seem to matter what i pickle, or if i use cPickle vs >> pickle) >> >> Traceback (most recent call last): >> File "/home/msolomon/test/zclient/client.py", line 10, in >> RuntimeError: cannot unmarshal code objects in restricted execution >> mode >> >> That line looks like this: >> 9: obj = None >> 10: in_a_pickle = pickle.dumps(obj, 2) >> >> >> Now here is a very strange observation - this exception does not occur >> if I put the contents of client.py into threadtest.py - it only >> happens >> when the code is imported. >> >> I'm not sure why threads appear to be executing in restricted mode - >> but if that is the problem, I guess I'd like to know how to turn that >> off. Despite stumbling onto a few occurrences of this problem, I have >> yet to see a solution posted anywhere. >> >> If either of you gentlemen have any additional insight, I would >> appreciate it. >> >> ------ >> >> My servlet looks like this (threadtest.py): >> >> import mod_python >> from zclient.client import Client >> >> def handler(req): >> c = Client() >> req.write(str(c.perform())) >> return mod_python.apache.OK >> >> >> This is zclient/client.py: >> >> import cPickle as pickle >> import threading, traceback >> >> class Client: >> def thread_op(self, results): >> try: >> obj = None >> in_a_pickle = pickle.dumps(obj, 2) >> results.append('ok') >> except Exception, e: >> results.extend(traceback.format_exc().split('\n')) >> >> def perform(self): >> results = [] >> t = threading.Thread(target=self.thread_op, args=(results,)) >> t.start() >> t.join() >> return str(results) >>
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