[mod_python] implications of multiple interpreters

Last night I found a bug in my code that involved using  
calendar.setfirstweekday in one place and later assuming that it was  
the default at another place (actually an earlier place that I came  
back to).

As I think about this there may be an interaction with multiple  
interpreters so that this MIGHTt ave been hard to reproduce and find.  
I fixed my problem but I am interested in understanding the  
implications of multiple interpreters for issues of this sort.

I suspect this is not dissimilar to the brief thread earlier in the  
week about python 3.0.