I\'m writing a python library that has a per-user configuration file that can be edited by the user of the library. The library also generates logging files. On *nix, the
%APPDATA% is the right place for these (probably in a subdirectory for your library). Unfortunately a fair number of *nix apps ported to Windows don't respect that and I end up with .gem, .ssh, .VirtualBox, etc., folders cluttering up my home directory and not hidden by default as on *nix.
You can make it easy even for users that don't know much about the layout of the Windows directory structure by having a menu item (or similar) that opens the configuration file in an editor for them.
If possible, do provide a GUI front-end to the file, though, even if it's quite a simple one. Windows users will expect a Tools | Options menu item that brings up a dialog box allowing them to set options and will be non-plussed by not having one.