Async tasks on startup (asyncio newbie)

[pihentagy]

Hi!

I'm new to asyncio in python, and need a bit of help how to add async things.
I'd like to have an async initialization method (for an autocomplete), but I don't want to block the user and let them use the app while querying. Not even starting is ever printed…

import asyncio 
import cmd2 
 
class MyCmdApp(cmd2.Cmd): 
   def __init__(self, *args, **kwargs): 
       super().__init__(*args, **kwargs) 
       self.loop = asyncio.get_event_loop() 
       self.result = 'not yet' 
       self.task = self.loop.create_task(self.long_running_task()) 
       print(self.task) 
 
   async def long_running_task(self): 
       # Simulate a long-running task 
       self.poutput('Starting') 
       await asyncio.sleep(5) 
       self.result = "Done!" 
       print("done") 
   def do_pr(self, _): 
       print(self.result) 
 
if __name__ == '__main__': 
   app = MyCmdApp() 
   app.cmdloop()