What thread-safe data persistence objects are available in Python for data persistence?

What Python thread-safe data persistence objects are available for data persistence? I need something that's similar to shelve. It's best if I can just change only a little bit of code instead of re-writing all parts related to data persistence.

I Googled about th开发者_如何学Gois a bit but didn't find too much useful information.

Look at the ZODB providing native object persistence:

http://www.zodb.org/