[ZODB-Dev] Mysterious traceback ...

[Stephen Waterbury]

I just installed ZODB 3.3 (from ZODB3-3.3.tgz) on my machine
(Debian Sarge,
Linux bigboote 2.6.8-1-686 #1 Thu Nov 25 04:34:30 UTC 2004
i686 GNU/Linux), and when I try to import ZODB I get:

Python 2.3.4 (#2, Dec  3 2004, 13:53:17)
[GCC 3.3.5 (Debian 1:3.3.5-2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> import ZODB
/usr/lib/python2.3/site-packages/Persistence/__init__.py:25: 
UserWarning: Couldn't import the ExtensionClass-based base class

     There are two possibilities:

     1. You don't care about ExtensionClass. You are importing
        Persistence because that's what you imported in the past.
        In this case, you should really use the persistent package
        instead:

           >>> from persistent import Persistent
           >>> from persistent.list import PersistentList
           >>> from persistent.mapping import PersistentMapping

     2. You want your classes to be ExtensionClasses. In this case,
        you need to install the ExtensionClass package
        separately. ExtensionClass is no-longer included with ZODB3.


   warn("""Couldn't import the ExtensionClass-based base class
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File "/usr/lib/python2.3/site-packages/ZODB/__init__.py", line 46, in ?
     from DB import DB
   File "/usr/lib/python2.3/site-packages/ZODB/DB.py", line 25, in ?
     from ZODB.Connection import Connection
   File "/usr/lib/python2.3/site-packages/ZODB/Connection.py", line 36, in ?
     from ZODB.utils import oid_repr, z64, positive_id
ImportError: cannot import name positive_id
 >>>


help help!

Steve