[Twisted-Python] setting perspective arg to getStateToCacheAndObserveFor

Marvin McNett mmcnett at cs.ucsd.edu
Tue Oct 24 17:16:01 EDT 2006

How does one go about setting the perspective parameter to 
twisted.spread.flavors.Cacheable.getStateToCacheAndObserveFor method? 
I'd like to return different information based on what type of observer 
is subscribing.  I've looked over and tested the example in the 
documentation, but it's always None.  I also looked over the source, but 
it's not obvious to me.


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