#! /usr/bin/env python3from asyncio import gather, get_event_loop, sleep, Eventfrom signal import SIGINT, SIGTERMdef shutdown_signaled(): print('Shutdown requested.') shutdown.set()async def small_work(shutdown): while not shutdown.is_set(): await sleep(0.5) print('Small work is done!') print('Exited small work.')async def big_work(shutdown): while not shutdown.is_set(): await sleep(5) print('Big work is done!!!') print('Exited big work.')# when this event is set the application is ready to shutdownshutdown = Event()# setting up our own handler for Ctrl+C and SIGTERM (sent with kill)# by setting this handler running tasks will not get an exception thrown at themevent_loop = get_event_loop()event_loop.add_signal_handler(SIGINT, shutdown_signaled)event_loop.add_signal_handler(SIGTERM, shutdown_signaled)# combining our two tasks as onecombined_tasks = gather(small_work(shutdown), big_work(shutdown))# run our tasks and blockevent_loop.run_until_complete(combined_tasks)登录后复制
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