NSRunLoop and asyncio event loop conflict

I'm very new to working with asynchronous code, but I'm trying to create a basic app monitor with python. I want to integrate an asynchronous loop that performs some checks every 5 seconds.

from Foundation import NSObject, NSRunLoopimport objcfrom AppKit import NSWorkspace, NSWorkspaceDidActivateApplicationNotificationimport threadingimport asyncioclass ApplicationMonitor(NSObject):    def init(self):        self = objc.super(ApplicationMonitor, self).init()        notification_center = NSWorkspace.sharedWorkspace().notificationCenter()        notification_center.addObserver_selector_name_object_(self,             self.application_activated, NSWorkspaceDidActivateApplicationNotification, None)        self.start_asyncio_task()        return self    def start_asyncio_task(self):        asyncio_thread = threading.Thread(target=self.run_asyncio_loop)        asyncio_thread.start()    def run_asyncio_loop(self):        loop = asyncio.new_event_loop()        asyncio.set_event_loop(loop)        try:            loop.run_until_complete(self.check_time())        finally:            loop.run_until_complete(loop.shutdown_asyncgens())    async def check_time(self):        while True:            await asyncio.sleep(5)            print("checking time")    def application_activated(self):        workspace = NSWorkspace.sharedWorkspace()        frontmost_application = workspace.frontmostApplication()        print("frontmost application: ", frontmost_application.localizedName())def main():    monitor = ApplicationMonitor.alloc().init()    run_loop = NSRunLoop.currentRunLoop()    run_loop.run()if __name__ == '__main__':    main()

I expect the output to look something like this:

checking timefrontmost application:  Firefoxfrontmost application:  Codechecking timefrontmost application:  Firefoxchecking timefrontmost application:  Code

However, the output appears to get locked to the last visited application at the beginning of a new 5 second loop:

frontmost application:  Firefoxfrontmost application:  Codechecking timefrontmost application:  Codefrontmost application:  Codefrontmost application:  Firefoxchecking timefrontmost application:  Firefoxfrontmost application:  Firefoxchecking timefrontmost application:  Firefoxfrontmost application:  Firefoxfrontmost application:  Codefrontmost application:  Firefoxfrontmost application:  Codechecking time