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John Raines
jrraines at comcast.net
Sat May 5 07:05:24 EDT 2007
My point was that there is presumably one global flag that tells the calendar module whether the first weekday is Sunday or Monday. I'm presuming that if one subinterpreter changes the default Monday to Sunday that all the subinterpreters also see this happen. The flag iprobably isn't set on a per interpreter basis and even if it were, a browser client isn't guarranteed the same subinterpreter on the next request. The first weekday needs to be restored to the default and the end of each page request and if the client wants something else, it will need to be set up each request by some mechanism usng cookies or sessions or something similar. The first weekday thing can be set but not directly read; you can figure out what it is by looking at the returned calendar for a specific month. If I understood the python 3.0 issue it was similar to this, but more difficult: they were considering adding the ability to override arithmetic operators for some classes and this would be global behavior. There would typically be no way to reset THAT to default and restore it to what was wanted on each request. On May 4, 2007, at 10:19 PM, Graham Dumpleton wrote: > As 'calendar' is a pure Python module any problem wouldn't be anything > to do with multiple sub interpreters as each sub interpreter has its > own copy of pure Python code modules. Any problem you saw is more > likely the result of using the Apache worker MPM on UNIX, or using a > Windows box, and the fact that distinct requests can be running > concurrently within the one sub interpreter of a process in different > threads. > > Graham > > On 04/05/07, John Raines <jrraines at comcast.net> wrote: >> 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. >> _______________________________________________ >> Mod_python mailing list >> Mod_python at modpython.org >> http://mailman.modpython.org/mailman/listinfo/mod_python >>
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