Why not simply use /sr/action/id without any url remapping? What is the advantage of having an argument and function name order reversed? For viewing the record you still need to call a specific function, e.g. /sr/view/1. Anyway, if you want it your way, try this:
routes_in = (
("/sr/(\d+)/(.+)", r"/init/sr/\2/\1"),
("/sr/(\d+)", r"/init/sr/view/\1"),
("/sr", "/init/sr"),
)
