[Zope] Showstopper: need very basic help with Zope2 persistence

[Joe Grace]

Hi,

I'm using Zope2 and am trying to get Persistence working for the first
time by creating an object store.  I'm using the documentation:

	http://www.zope.org/Documentation/Reference/ObjectPublishingIntro

which has a chunk of code to do a very basic store on a Person.  I've
tried this code both within and without Zope with no success.  I'm
wondering whether

	1.  The code (appended) doesn't work for Zope2?
            When ExternalMethod->Add'ed into Zope, I get:

                Zope Error

                Zope has encountered an error while publishing this
resource. 

                exceptions.AttributeError

                Sorry, a Zope error occurred.

	    When run outside Zope, I get:
                //D/Zope.W32/Extensions:-)  python Person.py
                Traceback (innermost last):
                  File "Person.py", line 14, in ?
                    object_store =
BoboPOS.PickleDictionary("people_store.db")
                  File
"D:\Zope-2.0.0a4-src\lib\python\BoboPOS\PickleDictionary.py", line 162,
i
                n __init__
                   
jar=PickleJar.PickleJar(db,cache_size,cache_age=cache_age)
                  File
"D:\Zope-2.0.0a4-src\lib\python\BoboPOS\PickleJar.py", line 120, in
__ini
                t__
                    cache=self.cache=PickleCache(cache_size,cache_age)
                AttributeError: 'int' object has no attribute
'setklassstate'

	    Is there some new code which works in Zope2 to get persistence?

	2.  My Zope2 installation is somehow broken?

I would really appreciate some help on this (I thought) basic issue as
it's a show-stopper for what I'm doing.  I didn't expect to have this
problem since it seem(ed) so well documented and basic.

If this question is somehow unanswerable, I'd like to know that too (so
I know to give up)!

Thanks,

= Joe =

P.s., I've tried a bunch of variations and searched code for similar
fragments all to no
avail.  If someone has a code fragment or pointer to working code,
please let me know.

-=-  Code  -=-
import BoboPOS

class Person(BoboPOS.Persistent):
  "A persistent person"
  def __init__(self,name,age):
    self.name=name
    self.age=age

def listDB( self):
  return "Hello"

# define the object store
#
object_store = BoboPOS.PickleDictionary("people_store.db")

# retrieve billy from the object store
#
if object_store.has_key("billy"):
    # if billy is in the object store, then
    # load it from the object store
    #
    billy=object_store["billy"]

else:
    # since billy isn't already in the object
    # store, we must create the object and
    # place it in the object store.
    #
    billy=object_store["billy"]=Person("Billy",77)
 
    # normally Zope will handle transactions,
    # but in this special case, we need to 
    # commit the transaction to save the new
    # persistent object
    #
    get_transaction().commit()



# display the object that we retrieved
# from the object store
#
listDB()