Depends on pyobjc.
At the moment, the only bit of this up here is urlhandler.py:
Get and set OSX Launch Services's default handler for a URI scheme.
Usage:
urlhandler.py list <scheme>...
urlhandler.py set-default --handler=<bundle_id> <scheme>...
Commands:
list List all applications that are registered with Launch Services
as being able to handle each of the given URI schemes.
set-default Set the default application to <bundle_id> for each scheme
passed. (If you don't know the bundle ID, use list first.)
(Brew's version of duti was not building on Mavericks and I really wanted open https://... to start Chrome Canary.)