Jim Carroll wrote at 2007-8-12 16:45 +0000:
> ...
>Somehow, the code that adds the message to the persistent 
>list is running more than once.  I have read that ZEO will 
>re-run python code on a retry

You have read something wrong.

  The only thing, ZEO does in case of a conflict is trying to
  call "_p_resolveConflict" on the conflicting object.

Every redo is something the application may or may not do.

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