[Twisted-Python] Nested objects in pickle (was: Large projec t (IMS) architecture)

[Rick Richardson]

that's a good question:

>>> class MyClass:
	def __init__(self):
		self.blah = 1
		
>>> class MySecondClass:
	def __init__(self):
		self.foo = MyClass()

>>> class MyThirdClass:
	def MyFunc():
		print "test"

>>> bar = MyThirdClass()
>>> bar.foo = MySecondClass()
>>> dir(bar)
['MyFunc', '__doc__', '__module__', 'foo']

>>> pickle.dump(bar, outfile)
 |
 ------
	 |
      \/
(i__main__
MyThirdClass
p0
(dp1
S'foo'
p2
(i__main__
MySecondClass
p3
(dp4
g2
(i__main__
MyClass
p5
(dp6
S'blah'
p7
I1
sbsbsb.

>>> blarg = pickle.load(infile)
>>> dir(blarg)
['MyFunc', '__doc__', '__module__', 'foo']

>>> blarg.foo.foo.blah
1
>>> 

The has-a nested relationships seem to work. Is it the is-a that is broken
in pickle? I never knew that to be a nested relationship.


-----Original Message-----
From: twisted-python-admin at twistedmatrix.com
[mailto:twisted-python-admin at twistedmatrix.com]On Behalf Of Patrick K.
O'Brien
Sent: Thursday, January 16, 2003 10:39 AM
To: twisted-python at twistedmatrix.com; Steve Waterbury
Subject: Re: [Twisted-Python] Large project (IMS) architecture


On Thursday 16 January 2003 12:01 pm, Steve Waterbury wrote:
> Itamar Shtull-Trauring wrote:
> > PB actually implements its own version of Pickle as well (jelly)...
>
> And jelly does nested objects, which Pickle can't.

I'm not sure what you mean by that. Could you explain in what way Pickle 
can't handle nested objects? Thanks.

-- 
Patrick K. O'Brien
Orbtech      http://www.orbtech.com/web/pobrien
-----------------------------------------------
"Your source for Python programming expertise."
-----------------------------------------------


_______________________________________________
Twisted-Python mailing list
Twisted-Python at twistedmatrix.com
http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python