[EMAIL PROTECTED] wrote: > im plugging away at the problems at > http://www.mathschallenge.net/index.php?section=project > im trying to use them as a motivator to get into advanced topics in > python. > one thing that Structure And Interpretation Of Computer Programs > teaches is that memoisation is good. > all of the memoize decorators at the python cookbook seem to make my > code slower. > is using a decorator a lazy and inefficient way of doing memoization? > can anyone point me to where would explain how to do it quickly. or is > my function at fault?
Your problem is that you are mixing psyco and memoize decorators; psyco cannot accelerate inner functions that use nested scopes (see http://psyco.sourceforge.net/psycoguide/unsupported.html ). You could try using the memoize decorator from: http://wiki.python.org/moin/PythonDecoratorLibrary , which doesn't use functions with closures, or use Fredrik Lundh's solution which puts memoization directly into the function. Ziga -- http://mail.python.org/mailman/listinfo/python-list
