On Thu, 2004-04-29 at 15:11, Goswin von Brederlow wrote: > You know how big the file is and you have to write it anyway. > > So, why not create a sparse file and mmap it? Nice idea; I assume that is possible in python? Does that actually reduce memory usage, BTW? Anyway, the problem is less one of not having a perfect solution; it's more a case of finding someone with time to code it. Chris