Nagu wrote:
I am trying to save a dictionary of size 65000X50 to a local file and I get the memory error problem.How do I go about resolving this? Is there way to partition the pickle object and combine later if this is a problem due to limited resources (memory) on the machine (it is 32 bit machine Win XP, with 4GB RAM). Here is the detail description of the error: Traceback (most recent call last): File "<pyshell#12>", line 1, in <module> s = pickle.dumps(itemsim) File "C:\Python25\lib\pickle.py", line 1366, in dumps Pickler(file, protocol).dump(obj) File "C:\Python25\lib\pickle.py", line 224, in dump self.save(obj) File "C:\Python25\lib\pickle.py", line 286, in save f(self, obj) # Call unbound method with explicit self File "C:\Python25\lib\pickle.py", line 649, in save_dict self._batch_setitems(obj.iteritems()) File "C:\Python25\lib\pickle.py", line 663, in _batch_setitems save(v) File "C:\Python25\lib\pickle.py", line 286, in save f(self, obj) # Call unbound method with explicit self File "C:\Python25\lib\pickle.py", line 600, in save_list self._batch_appends(iter(obj)) File "C:\Python25\lib\pickle.py", line 615, in _batch_appends save(x) File "C:\Python25\lib\pickle.py", line 286, in save f(self, obj) # Call unbound method with explicit self File "C:\Python25\lib\pickle.py", line 562, in save_tuple save(element) File "C:\Python25\lib\pickle.py", line 286, in save f(self, obj) # Call unbound method with explicit self File "C:\Python25\lib\pickle.py", line 477, in save_float self.write(FLOAT + repr(obj) + '\n') MemoryError: out of memory
I've generated some rather large pickled dicts before and have never seen this before. You can, of course, split your dictionary into several smaller ones, pickle them individually and combine them back together on unpickle/read using the dictionary update method.
BTW - 32-bit Windows can only address 3.5Gb of memory maximum. If you have more installed, it is ignored.
-Larry -- http://mail.python.org/mailman/listinfo/python-list
