gistfile1.txt

import trio                                                  
                                                             
async def sleeper():                                         
    try:                                                     
        await trio.sleep(30)                                 
    except KeyboardInterrupt:                                
        print("KBInterrupt")                                 
                                                             
async def test():                                            
    with trio.open_cancel_scope() as cancel_scope:           
        cancel_scope.shield = True                           
        # This cannot be interrupted by any means short of   
        # killing the process:                               
        try:                                                 
            await trio.sleep(10)                             
        except KeyboardInterrupt:                            
            print("KBInterrupt")                             
              
    # This doesn't catch the KeyboardInterrupt
    with trio.open_cancel_scope(shield=True):                
        async with trio.open_nursery() as nursery:           
            nursery.spawn(sleeper)                           
                                                             
trio.run(test)