[Zope] array module and pickleing ques
Tue, 09 Jul 2002 22:55:00 -0700
some more info: the error:
Error Type: UnpickleableError
Error Value: Cannot pickle objects
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Traceback (innermost last):
File F:\KANDIN~1\lib\python\ZPublisher\Publish.py , line 150, in
File F:\KANDIN~1\lib\python\ZPublisher\Publish.py , line 114, in publish
File F:\KANDIN~1\lib\python\Zope\__init__.py , line 158, in
File F:\KANDIN~1\lib\python\ZPublisher\Publish.py , line 102, in publish
File F:\KANDIN~1\lib\python\Zope\__init__.py , line 172, in commit
File f:\kandinsky\lib\python\Products\TransactionAgents\__init__.py ,
line 54, in new_commit
File F:\KANDIN~1\lib\python\ZODB\Transaction.py , line 233, in commit
File F:\KANDIN~1\lib\python\ZODB\Connection.py , line 345, in commit
(Info: (('Products.RC2.RC2', 'RC2'), '\x00\x00\x00\x00\x00\x00h\xe1',
UnpickleableError: (see above)
I also tried the following in the python console:
Python 2.1.2 (#31, Jan 15 2002, 17:28:11) [MSC 32 bit (Intel)] on win32
Type "copyright", "credits" or "license" for more information.
>>> import pickle, array, os
>>> f= open('test','w')
>>> x = array.array('H')
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "F:\KANDIN~1\bin\lib\pickle.py" , line 939, in dump
File "F:\KANDIN~1\bin\lib\pickle.py" , line 109, in dump
File "F:\KANDIN~1\bin\lib\pickle.py" , line 171, in save
raise PicklingError, \
pickle.PicklingError: can't pickle 'array' object: array('H')
The problem is that I NEED that array sizes to be 1 or 2 bytes and I
dont know how to get around this problem without arrays.
Any help would be greatly appreciated.
Aseem Mohanty wrote:
> why does a call to array.array() cause an unpickleable error??
> the pickle docs on the python site dont mention anything about arrays,
> nor do the array docs mention about pickling.
> i have a feeling that it might be because of the fact that arrays are
> dynamic data structures and thus the pickler doesnt really know about
> its limits (of course I could be totally and miserably wrong) i
> couldnt find anything in the docs to support my 'feeling' and the
> source is kind of above my current level of expertise in python
> any help would be appreciated or i am doomed to a major rewrite....
> the source in my product that causes the error :
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