[Stackless] Fwd: deepcopying (pickling) channels

[lars van Gemerden]

I tested wing_hack() a little bit:

It does not work with my pickling in unit tests:

#------------------------------------------------------------------
import unittest
import pickle

#other imports ...

from toolshed.hacks import wing_hack

class Test(unittest.TestCase):

    def testAPickle(self):
         string = pickle.dumps(WorldModel(config = config.flow_test_config))


if __name__ == "__main__":

    wing_hack()
    unittest.main(verbosity = 2)

#---------------------------------------------------------
WorldModel is far too complex to post, but somewhere i assign a method like
self.func = self.func2 in the test case.

I hope it's something simple but i don't know enough about the import
mechanism to spot it.

Cheers, Lars

PS: declickification

def wing_hack():
    '''
    when wing has replaced __import__, wrap that with a function
    that pretends to be the original __import__
    '''
    import __builtin__
    imp = __builtin__.__import__
    if imp.__name__ != '__import__':
        print("fixing Wing's import hook")
        def __import__(*args, **kw):
            return imp(*args, **kw)
        __import__.__module__ = '__builtin__'
        __builtin__.__import__ = __import__





On Fri, Nov 1, 2013 at 11:36 AM, lars van Gemerden <lars at rational-it.com>wrote:

> Thank you Chris,
>
> I am doing something else now but will be testing/using this asap (a lot
> on my plate).
>
> Has anyone checked what the behavior of non-stackless python is (with
> and/or without Wing debugger). I think that if possible that should be the
> situation to mimic and should give an indication who is best positioned
> (Wing and/or Stackless) to do the final fix.
>
> Cheers, Lars
>
>
> On Wed, Oct 30, 2013 at 12:42 AM, Christian Tismer <tismer at stackless.com>wrote:
>
>> On 29.10.13 16:54, John Ehresman wrote:
>>
>>> On 10/27/13 6:18 PM, Christian Tismer wrote:
>>>
>>>> So my guess of the solution is this:
>>>>
>>>> Let wingdb_import_hook report "__builtin__" as its module and
>>>> '__import__' as
>>>> its name, and you are fine.
>>>>
>>>
>>> You're right.  The problem with simply using a name other than
>>> __builtin__.__import__ is that it may not be there when a pickle is loaded
>>> because the debugger may not be running.  This is illustrated by the
>>> attached failimp.py file.  Try running:
>>>     failimp.py debug dump
>>>     failimp.py load
>>> This simulates creating a pickle when the debugger is running and then
>>> trying to load it when the debugger is not running.  The workaround is to
>>> set __module__ to '__builtin__' and __name__ to '__import__' on the
>>> import_hook function.
>>>
>>
>> Here is a simple work-around that people might want to use until either
>> Wing or Stackless are changed a bit.
>> It crashes in the Wing IDE, unless you specify 'fix' on the command line.
>>
>> cheers - chris
>>
>>
>> --
>> Christian Tismer             :^)   <mailto:tismer at stackless.com>
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>
>
>
> --
> ====================================
> Lars van Gemerden
> lars at rational-it.com
> +31 6 26 88 55 39
> ====================================
>



-- 
====================================
Lars van Gemerden
lars at rational-it.com
+31 6 26 88 55 39
====================================
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