except KeyError, everywhere

[Nobody]

On Fri, 03 Jun 2011 22:08:16 +0200, Wilbert Berendsen wrote:

> I find myself all over the place associating objects with each other using 
> dicts as caches:

> Are there other peoply using things like this? Is there a solution like
> this in the standard lib that I'm overlooking?

The general concept is called "memoization". There isn't an implementation
in the standard library, but you'll find plenty of examples, e.g. (from
the first page of Google hits for "python memoization"):

http://wiki.python.org/moin/PythonDecoratorLibrary#Memoize
http://code.activestate.com/recipes/52201-memoizing-cacheing-function-return-values/
http://code.activestate.com/recipes/577219-minimalistic-memoization/