Re: Using copyreg to pickle unpicklable oblects

2016-09-19 Thread Peter Otten 
kerbingamer376 wrote:

> On Monday, September 19, 2016 at 5:48:35 PM UTC+1, Peter Otten wrote:
>> kerbingamer376 wrote:
>> 
>> > Hi,
>> 
>> [No need to start a new thread for this]
>> 
>> > I have an object (pygame.mixer.Sound) and, to convert it to a picklable
>> > format, I can run:
>> > 
>> > sound_object.get_raw()
>> > 
>> > and to turn that back into an object, I can run:
>> > 
>> > sound_object = pygame.mixer.Sound(raw_data)
>> > 
>> > Is it possible to use copyreg or something similar so it's done
>> > automatically when I pickle pygame.mixer.Sound() objects?
>> 
>> Have a look at the example from the documentation:
>> 
>> >>> import copyreg, copy, pickle
>> >>> class C(object):
>> ... def __init__(self, a):
>> ... self.a = a
>> ...
>> >>> def pickle_c(c):
>> ... print("pickling a C instance...")
>> ... return C, (c.a,)
>> ...
>> >>> copyreg.pickle(C, pickle_c)
>> 
>> 
>> Translating that gives (untested)
>> 
>> import copyreg # copy_reg in Python 2
>> import pygame.mixer
>> 
>> def pickle_sound(sound):
>> return pygame.mixer.Sound, (sound.get_raw(),)
>> 
>> copyreg.pickle(pygame.mixer.Sound, pickle_sound)
>> 
>> Does that work?
> 
> I get:
> 
> _pickle.PicklingError: Can't pickle : attribute lookup
> Sound on builtins failed

Looks like Sound doesn't set the __module__ attribute correctly.
Try injecting it into the built-in namespace:

import builtins
builtins.Sound = pygame.mixer.Sound


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Re: Using copyreg to pickle unpicklable oblects

2016-09-19 Thread kerbingamer376 
On Monday, September 19, 2016 at 5:48:35 PM UTC+1, Peter Otten wrote:
> kerbingamer376 wrote:
> 
> > Hi,
> 
> [No need to start a new thread for this]
> 
> > I have an object (pygame.mixer.Sound) and, to convert it to a picklable
> > format, I can run:
> > 
> > sound_object.get_raw()
> > 
> > and to turn that back into an object, I can run:
> > 
> > sound_object = pygame.mixer.Sound(raw_data)
> > 
> > Is it possible to use copyreg or something similar so it's done
> > automatically when I pickle pygame.mixer.Sound() objects?
> 
> Have a look at the example from the documentation:
> 
> >>> import copyreg, copy, pickle
> >>> class C(object):
> ... def __init__(self, a):
> ... self.a = a
> ...
> >>> def pickle_c(c):
> ... print("pickling a C instance...")
> ... return C, (c.a,)
> ...
> >>> copyreg.pickle(C, pickle_c)
> 
> 
> Translating that gives (untested)
> 
> import copyreg # copy_reg in Python 2
> import pygame.mixer
> 
> def pickle_sound(sound):
> return pygame.mixer.Sound, (sound.get_raw(),)
> 
> copyreg.pickle(pygame.mixer.Sound, pickle_sound)
> 
> Does that work?

I get:

_pickle.PicklingError: Can't pickle : attribute lookup Sound on 
builtins failed
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Re: Using copyreg to pickle unpicklable oblects

2016-09-19 Thread Peter Otten 
kerbingamer376 wrote:

> Hi,

[No need to start a new thread for this]

> I have an object (pygame.mixer.Sound) and, to convert it to a picklable
> format, I can run:
> 
> sound_object.get_raw()
> 
> and to turn that back into an object, I can run:
> 
> sound_object = pygame.mixer.Sound(raw_data)
> 
> Is it possible to use copyreg or something similar so it's done
> automatically when I pickle pygame.mixer.Sound() objects?

Have a look at the example from the documentation:

>>> import copyreg, copy, pickle
>>> class C(object):
... def __init__(self, a):
... self.a = a
...
>>> def pickle_c(c):
... print("pickling a C instance...")
... return C, (c.a,)
...
>>> copyreg.pickle(C, pickle_c)


Translating that gives (untested)

import copyreg # copy_reg in Python 2
import pygame.mixer

def pickle_sound(sound):
return pygame.mixer.Sound, (sound.get_raw(),)

copyreg.pickle(pygame.mixer.Sound, pickle_sound)

Does that work?

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Using copyreg to pickle unpicklable oblects

2016-09-19 Thread kerbingamer376 
Hi,
I have an object (pygame.mixer.Sound) and, to convert it to a picklable format, 
I can run:

sound_object.get_raw()

and to turn that back into an object, I can run:

sound_object = pygame.mixer.Sound(raw_data)

Is it possible to use copyreg or something similar so it's done automatically 
when I pickle pygame.mixer.Sound() objects?
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