Chris
2011/3/7 Rogério Luz <rogeriosantos...@gmail.com>
> Chris, Thanks a lot for your explanation, I got it
>
> class MyClass:
> #class variables
>
> teste = 0
> nome = None
> lista = ["default"]
>
> def __init__(self):
> #instance variables
> self.lista = MyClass.lista # if I still want "default" class
> variable
>
> for reg in range(1,10):
> self.lista.append(reg)
> self.nome = "Teste"
> self.teste = 19900909
While this will work, keep in mind that all instances of MyClass will share
the same list.
# Untested
>> a = MyClass()
>> print a.lista
['default', 1, 2, 3, 4, 5, 6, 7, 8, 9]
>> a = MyClass()
>> print a.lista
['default', 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9]
To get around this, you'd need to copy the list (see the copy module).
>
> On Mon, Mar 7, 2011 at 1:51 PM, Chris Kaynor <ckay...@zindagigames.com>wrote:
>
>> On Mon, Mar 7, 2011 at 8:38 AM, Rogerio Luz
>> <rogeriosantos...@gmail.com>wrote:
>>
>>> Hi All
>>>
>>> I'd like to pickle an object instance with all values. So I
>>> instanciate myClass and set some values including a list with more
>>> values (in the __init__), then dump to file. I realized that the
>>> pickled object don't saved my new list values (saved only the
>>> "default" value) but saved a String and an int. What I'm doing wrong?
>>> Thanks Rogerio
>>>
>>> $ python3 pickler.py P
>>> Dump: ['default', 1, 2, 3, 4, 5, 6, 7, 8, 9] TestStr 19900909
>>>
>>> $ python3 pickler.py U
>>> Load: ['default'] TestStr 19900909
>>>
>>> # pickler.py
>>>
>>> import sys
>>> import pickle
>>>
>>> class MyClass:
>>> teste = 0
>>> nome = None
>>> lista = ["default"]
>>>
>>> def __init__(self):
>>> for reg in range(1,10):
>>> self.lista.append(reg)
>>> self.nome = "TestStr"
>>> self.teste = 19900909
>>>
>>
>> In this definition, you are creating a class variable then appending your
>> arguments to it. Pickling won't save class variables - only
>> instance variables. The string and int work as you are reassigning them
>> within the __init__ function, thereby making them instance variables.
>>
>> Something like:
>>
>> class MyClass:
>> teste = 0
>> nome = None
>>
>> def __init__(self):
>> self.lista = ['default']
>> for reg in range(1,10):
>> self.lista.append(reg)
>> self.nome = "TestStr"
>> self.teste = 19900909
>>
>>
>>
>>> #main
>>> def main(argv):
>>> if argv[1] == "P":
>>> with open('myClass.pickle', 'wb') as f:
>>> myClass = MyClass()
>>> print("Dump:",myClass.lista, myClass.nome, myClass.teste)
>>> pickle.dump(myClass, f, pickle.HIGHEST_PROTOCOL)
>>>
>>> elif argv[1] == "U":
>>> with open('myClass.pickle', 'rb') as f:
>>> myClass = pickle.load(f)
>>> print("Load:",myClass.lista, myClass.nome, myClass.teste)
>>>
>>> if __name__ == "__main__":
>>> main(sys.argv)
>>> --
>>> http://mail.python.org/mailman/listinfo/python-list
>>>
>>
>>
>
>
> --
> []´s
>
> Rogério Luz
>
--
http://mail.python.org/mailman/listinfo/python-list
