I know PyObject arrays aren't supported in numarray yet -- but how about making the functions more polymorphic? Yes, they work on other sequence types such as lists -- but there seems to be quite a bit of type checking going on. I suppose that is necessary for performance reasons, but how about some polymorphic behaviour in the cases where an unknown type is encountered? It would be nice, for example, if sum() worked on general iterators and generators, and if argsort() worked on, e.g., lists of strings... This would make it easier to integrate the purely numeric stuff with other parts of Python programs... It may be that I'm going beyond the scope of numarray here, but this sort of agnostic signature-based polymorphism is very Pythonic. -- Magnus Lie Hetland http://hetland.org