[ZODB-Dev] Convert a ZODB 3.2 -> ZODB 3.3

[Chris Cioffi]

Hi all,

I've got a stand alone ZODB app.  I can create new file storage files
no problem, but now I need to access the data from an older v3.2 file
storage file and I'm getting the error:

No handlers could be found for logger "ZODB.FileStorage"
C:\Python23\Lib\site-packages\Persistence\__init__.py:25: UserWarning:
Couldn't import the ExtensionClass-based base class
...

Now, all I want to do is open the old storage and move it into a new
fs file.  (I'm doing it that way since the data structure has been
overhauled.)

Here's my open function:

import ZODB
from   ZODB import FileStorage, DB
def open_zodb(Path):
    """Open ZODB.

    Returns a tuple consisting of:(root,connection,db,storage)
    The same tuple must be passed to close_zodb() in order to close the DB.
    """
    # Connect to DB
    storage     = FileStorage.FileStorage(Path)
    db          = DB(storage)
    connection  = db.open()
    root        = connection.root()
    return (root,connection,db,storage)

This is from a tutorial on using ZODB and it's been working fine until now.  

Some more info:  This works fine when ZODB 3.2 is installed and I open
a v3.2 fs.  And it works fine when v3.3 is installed and
accessing/creating v3.3 fs.  It is only failing when I have v3.3
installed and am trying to access v3.2 data.

Thanks!

Chris
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