Are there libraries which implement some form of spreadsheet-style dependency tracking? The idea is to enable incremental updates to some fairly convoluted computation. I hope that a general dependency tracking framework would avoid making the computation even more convoluted and difficult to change.
It would also be preferable if the whole dataset would not have to be kept in memory for the whole computation. (It's rather smallish, though, so it wouldn't be impossible to keep it resident, I guess.) -- http://mail.python.org/mailman/listinfo/python-list
