On 2016-02-12 00:31, Paulo da Silva wrote: > What is the best (shortest memory usage) way to store lots of > pathnames in memory where: > > 1. Path names are pathname=(dirname,filename) > 2. There many different dirnames but much less than pathnames > 3. dirnames have in general many chars > > The idea is to share the common dirnames.
Well, you can create a dict that has dirname->list(filenames) which will reduce the dirname to a single instance. You could store that dict in the class, shared by all of the instances, though that starts to pick up a code-smell. But unless you're talking about an obscenely large number of dirnames & filenames, or a severely resource-limited machine, just use the default built-ins. If you start to push the boundaries of system resources, then I'd try the "anydbm" module or use the "shelve" module to marshal them out to disk. Finally, you *could* create an actual sqlite database on disk if size really does exceed reasonable system specs. -tkc -- https://mail.python.org/mailman/listinfo/python-list
