[PEAK] A taxonomy of event sources: designing the events API

[Phillip J. Eby]

At 10:02 AM 1/7/04 -0500, Bob Ippolito wrote:

>On Jan 7, 2004, at 9:42 AM, Phillip J. Eby wrote:
>
>>At 12:12 PM 1/7/04 +0100, Ulrich Eck wrote:
>>>I'm really looking forward to rewrite my workflowstuff to use
>>>peak.events .. it will fit perfectly i think :))
>>
>>Keep in mind that generators can't be pickled, so you really can't use 
>>events.Thread objects to represent workflows that last longer than a 
>>single program run.
>
>Stackless Python pickles generators! :)

...and IIRC, it does so by also pickling the code object involved, which 
doesn't provide any opportunity for workflow process evolution.  That is, 
if you change the code, existing instances are unaffected.  For certain 
circumstances that's useful, for others it's not what you want.  At least, 
it's not what I want as the primary mechanism for saving state.