Jean-Paul Calderone exarkun at divmod.com Fri Feb 3 14:08:54 MST 2006 wrote:

DeferredList has *either* callback *or* errback called on it, just like any Deferred. If you just give it a list of Deferreds, it will always have its callback method invoked and never have its errback method invoked, regardless of whether any of the Deferreds it was constructed with fail. However, if you pass a true value for fireOnOneErrback when constructing your DeferredList, any Deferred which errbacks will cause the DeferredList to errback; in this case it will never callback.

Does that help?

That definitely helps, but I'm wondering if this behavior was implemented between 1.3 and 2.0? I can provide an example where both the DeferredList's errback and callback are called on 1.3 when any one of the DeferredList's Deferreds err -- without setting fireOnErrback. I'll grab 2.1 tonight and see if I can reproduce it there. Thanks, Lenny __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com