code: def routes_register(app, handler, *paths, methods=None, router=None, name=None):
      
      if router is None:
          router = app.router
  
      handler = to_coroutine(handler)
  
      resources = []
  
      for path in paths:
  
          # Register any exception to app
          if isinstance(path, type) and issubclass(path, BaseException):
              app._error_handlers[path] = handler
              continue
  
          # Ensure that names are unique
          name = str(name or '')
          rname, rnum = name, 2
          while rname in router:
              rname = "%s%d" % (name, rnum)
              rnum += 1
  
          path = parse(path)
          if isinstance(path, RETYPE):
              resource = RawReResource(path, name=rname)
              router.register_resource(resource)
  
          else:
              resource = router.add_resource(path, name=rname)
  
          for method in methods or [METH_ANY]:
              method = method.upper()
              resource.add_route(method, handler)
  
          resources.append(resource)
  
      return resources
docs: Register routes.