Vineet Jain (gmail) wrote:
I’m trying to load pickled user defined classes from iron python. The
pickled object was created using cpython 2.5 on an ubuntu box. I can
load them fine with cpython 2.5 on a windows box. However when I load
them from ironpython I get the following incomplete stack trace:
c:\trading\pytrade\modules\apiscripts\models>ipy test_pickle.py
Traceback (most recent call last):
File "test_pickle.py", line 20, in test_pickle.py
File "test_pickle.py", line 13, in loadTrades
File "c:\Program Files\IronPython 2.0.1\Lib\pickle.py", line 1370, in load
File "c:\Program Files\IronPython 2.0.1\Lib\pickle.py", line 858, in load
KeyError: [
Any ideas on how I can go about debugging this? Is pickle.load of user
defined classes from cPython supported?
That isn't enough information to diagnose the problem. The short answer
is that yes, IronPython does support the unpickling of user defined
classes created in CPython:
C:\compile>python
Python 2.5.2 (r252:60911, Feb 21 2008, 13:11:45) [MSC v.1310 32 bit
(Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from test import Test
>>> from pickle import dumps
>>> t = Test()
>>> open('instance.pkl', 'wb').write(dumps(t))
>>>
C:\compile>"C:\Program Files (x86)\IronPython 2.0.1\ipy.exe"
IronPython 2.0 (2.0.0.0) on .NET 2.0.50727.3074
Type "help", "copyright", "credits" or "license" for more information.
>>> import test
>>> from pickle import loads
>>>
>>> t = loads(open('instance.pkl').read())
>>> t
<Test object at 0x000000000000002B>
>>>
In the example above the module test.py contains only:
class Test(object):
pass
All the best,
Michael
Thanks,
Vineet
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